1. Rinse the glass with hot water in the first sink. 2. Soak the glass in a sanitizer solution in the second sink for at least one minute. 3. Rinse the glass with cold water in the third sink. 4. Allow the glass to air dry in a clean, inverted position.
What is sink?A sink is a fixture used for washing hands and dishes, and for other cleaning purposes. It is usually made of porcelain or stainless steel and is mounted on the countertop or wall. The sink has a basin, usually with a drain and a tap or faucet. It is connected to the plumbing system, which supplies water for washing and draining. Sinks can also have a sprayer hose, a garbage disposal, or an aerator for better water flow. They are an essential part of any kitchen or bathroom, and come in a variety of sizes and styles to suit different spaces and needs.
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I can’t figure out how to answer this question.
A
Explanation:
Nitrogen is also a part of non-living things like the air above and the dirt below. Nitrogen does not stay in one place. It moves slowly between living things, dead things, the air, soil and water. These movements are called the nitrogen cycle.
In trying to determine whether DNA or protein is the genetic material, Hershey and Chase made use of which of the following facts?
Radioactivity was utilized by Hershey and Chase to determine whether DNA or protein made up the genetic material. They used radioactive phosphate to identify the Nucleotide in a T2 phage.
Simply put, what is radioactivity?Radioactivity, as its name suggests, is just the act of generating radiation without any external cause. An fission reaction that is unstable for some reason accomplishes this by "wanting" to give up considerable energy through order to change its configuration to one that is more stable.
Why does radioactivity occur?Radioactivity is the energy released when the nuclei of specific atoms and isotopes decay. Protons and neutrons are linked together in little coils at the centers of atoms to generate their atomic nucleus.
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11. Why is it important that the labels included in specimen jars be made of special paper that does not
disintegrate in alcohol over time
The labels are placed in the jars along with the specimens to make sure that they are not lost. Because fish are stored in 50% isopropyl alcohol, which disintegrates most types of paper, the labels have to be made of a special paper that does not disintegrate.
The following are the steps for preserving specimens for scientific study:
Euthanizing. Specimens should be killed in a way that leaves them uninjured and comfortable, in accordance with the Institutional Animal Care and Use Committee's best standards (IACUC).
Slitting and injection. Liquid preservatives must be injected or inserted through slits into the body cavities, limbs, and tail.
Fixing. While the specimens are still relaxed, place them on trays so that they harden in the right position.
Labeling. Each specimen should be accompanied by specific data, which should be either connected directly to the specimen or documented in a notebook with a number matching to a numbered tag affixed to the specimen.
Storage. After specimens have been properly positioned, they should be preserved in liquid preservative for at least several days before being allowed to remain in the liquid or moved to plastic bags for temporary storage.
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round 10000 B.C., residents of this early agricultural village in Southwest Asia began herding domestic sheep and goats and growing einkorn wheat. a) Catalhoyuk b) Ain Ghazal c) Abu Hureyra d) Al Nenana
(c)Abu Hureyra.
It is important because it demonstrates the transition from foraging to farming in one of the world's prior centres of agricultural expansion.
What were the evidences found at Abu Hureyra?Evidence found at Abu Hureyra signifies that rye was the first cereal crop to be cultivated in a systematic way. In contrast of this, it is now acknowledged that the systematic cultivation of cereal crops was around first time about 13,000 years ago.
Which is the oldest known crop to mankind?Lentils have helped to shape the path of human history for over 13000 years. Today, we add lentils to tasty dishes, soups and salads. In ancient times, however, lentils were an essential part of setting modern societies.
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The alveoli are air sacs inside our lungs where gas exchange occurs between our bodies and the air in the atmosphere. Based on the data in the table, which gas is present in the least amount in both the atmosphere and in the lungs?
a) CO2
b) H2O
c) N2
d) O2
Our lungs' alveoli are air sacs where gas exchange between our bodies and atmospheric air takes place. The least amount of CO2 is found in the atmosphere and the lungs.
About 78.08 percent of the dry air on Earth is composed of nitrogen, 20.95 percent of it of oxygen, and 0.93 percent of it is argon. The remaining fraction, or 0.04 percent, is made up of a variety of trace gases, such as ozone, carbon dioxide, methane, nitrous oxide, and other greenhouse gases. Although these greenhouse gases only make up a small portion of our atmosphere, they are crucial in trapping the Earth's radiant heat and preventing it from escaping into space, which warms our planet and increases the greenhouse effect.
Therefore, CO2 only makes up 0.04% of the gases with other greenhouse gases in the atmosphere and 5.2% of the gases in alveoli.
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rank the following steps of the scientific method in order, with the first step at the top of the list and the last step at the bottom of the list.
1. observe and ask questions about something in the natural world
2. create a hypothesis to explain your observations and make predictions
3. carry out the experiment(s) to test the hypothesis and collect data
4. analyze your data and draw conclusions
The steps of the scientific method in order:
1)observe and ask questions about something in the natural world
2)create a hypothesis to explain your observations and make predictions
3)carry out the experiment(s) to test the hypothesis and collect data
4)analyze your data and draw conclusions
Do all scientists obey the scientific method exactly?No, in some areas of science it can have more easily experimented than others. For instance, scientists who study how stars change as they age cannot fast-forward a star's life by a million years to test their hypotheses. When direct experimentation is not possible to do, scientists alter the scientific method.
What will be be the last step of scientific method?The final step of the scientific method is to display the results. After you collected and examined your data, you draw a final conclusion about your hypothesis. A conclusion is a summary of what you have understood from an experiment.
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Random question would u prefer foxes or lion?
Answer:
lions
Explanation:
I would prefer lions because of their size and looks.
Refer to the periodic table entry below to answer the following question.
Answer:
The atomic Number is 42 and it has 18 electrons in the n=3shell
Explanation:
Answer:
The last choice
Explanation:
Atomic numbers are found on the top left, and the number below is the molar mass.
If individual 2 were to marry a woman with no family history of the disease, which of the following would most likely be true of their children?
If individual 2 were to marry a woman with no family history of the disease then none of the children would have the disease.
What is family health history?A family health history is a list of the illnesses and ailments that have run in your family. Genes run in your family and yours. You might also share certain traits, like eating preferences and exercise routines. Living close to one another may expose you to similar environmental elements. All of these factors, including family history, may have an impact on your health.
Your familiarity with the medical background of your family may be broad or scant. To get the entire picture, use family gatherings as an occasion to talk about medical history. If you can, look over any family medical records and death certificates. Obtain information about your parents, siblings, and half-brothers as well as your grandparents, aunts, uncles, nieces, nephews, siblings, half-siblings, and half-brothers. Include information on the major illnesses, causes of death, age at disease diagnosis, age at death, and ethnicity.
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Which of the following best describes how a scientist could accurately study the effects of soil buffering on plant growth in a region that is affected by acid deposition downwind of a coal-burning power plant?
At the same distance from the power plant, compare the height changes of two separate groups of trees: one group is in topsoil, and the other group is in topsoil with additional limestone.
Which of the following describes how a cloudy?Gloomy day would affect the readings for the amounts of air pollutants measured.There will be a rise in nitrogen dioxide levels and a fall in ground-level ozone levels.At the same distance from the power plant, compare the height changes of two separate groups of trees: one group is in topsoil, and the other group is in topsoil with additional limestone.Limestone, the only uncontrolled variable in this study, has a built-in ability to neutralise acid rain. This study would evaluate the impact of soil buffering on plant development in an acid rain-affected area using a control group.To learn more about plant refer to:
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which of the following statements details the role of lipids? 1) some serve as a fuel source. 2) some provide structure to membranes. 3) some transport small molecules and ions across membranes. 4) some are precursors to steroids. which of the following statements details the role of lipids? 1) some serve as a fuel source. 2) some provide structure to membranes. 3) some transport small molecules and ions across membranes. 4) some are precursors to steroids. 1 and 3 are correct. 1, 2, and 4 are correct. all of the listed statements are correct. none of the listed statements is correct.
1, 2, and 4 are correct from the following statements that details the role of lipids.
What do you mean by lipids?
Lipids are a class of organic molecules that are essential components of all living cells. They are composed of fatty acids and have a wide range of functions in the body, such as providing energy, storing vitamins, and acting as structural components of cell membranes. Lipids are also important for many other processes such as hormone production, blood clotting, and digestion.
1) some serve as a fuel source.
2) some provide structure to membranes.
4) some are precursors to steroids.
The role of lipids is multifaceted. They can serve as a fuel source, provide structure to membranes, and act as precursors to steroids. In terms of fuel, lipids are an important energy source, providing more energy per gram than carbohydrates or proteins. They also provide structure to cellular membranes, as they can form a lipid bilayer which acts as a barrier between the interior and exterior of the cell. Lastly, lipids are precursors to steroids, which are hormones that play various roles in the body, such as regulating metabolism and reproductive processes.
Hence, options 1, 2 and 4 are correct.
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Which of the following would be inhibited by a drug that specifically blocks the addition of phosphate groups to proteins? Receptor tyrosine kinase activity. Phosphatase activity The activation of G proteins The deactivation of a phosphorylation cascade
The correct option is (A): Receptor tyrosine kinase activity. A medication that precisely prevents the addition of phosphate groups to proteins would inhibit receptor tyrosine kinase activity.
Phosphorylation, or the addition of a phosphate group, regulates several proteins in the organism. Kinases are enzymes that add phosphate groups to protein substrates. Kinases phosphorylate their substrates by transferring the terminal phosphate group of ATP (or GTP). Phosphorylation, or the addition of a phosphate group, activates proteins. Protein phosphorylation happens in all living things. Proteins are deactivated via dephosphorylation, which is the removal of a phosphate group. Proteins can activate or suppress important cellular actions such as secretion as part of a hormone. A cell uses phosphorylation as a switch to turn on or off protein activity. Dimerization and phosphorylation are characteristics of receptor tyrosine kinase activation. Because intracellular receptors are present exclusively in target cells, lipid-soluble signaling chemicals such as aldosterone traverse the membranes of all cells but influence only target cells.
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The complete question is: Which of the following would be inhibited by a drug that specifically blocks the addition of phosphate groups to proteins?
(A) Receptor tyrosine kinase activity
(B) Phosphatase activity
(C) The activation of G proteins
(D) The deactivation of a phosphorylation cascade
For each phrase or sentence, select the labeled part to which it is most closely related. Each option may be used once, more than once, or not at all for each group."Site of conversion of chemical energy of glucose to ATP"answer choicesABCD
Site of conversion of chemical energy of glucose to ATP is depicted by part labelled as B in the figure which corresponds to mitochondria of the cell.
ATP is created through the cellular respiration of glucose. Glucose is completely oxidised to produce CO2 and water, which releases ATP-stored energy. One glucose molecule undergoes aerobic respiration, yielding 38 ATP molecules. Aerobic respiration occurs in the mitochondria and cytoplasm. Cellular respiration includes the processes of glycolysis, the Krebs cycle, and oxidative phosphorylation via the electron transport system. The site of this conversion is represented as the part B in the image.
Glycolysis is the term for the lysis or splitting of sugars. During glycolysis, one molecule of the 6-carbon chemical glucose is split into two molecules of 3-carbon pyruvic acid. Whether or whether the cytoplasm contains oxygen, this is a possibility. In sum, we have two pyruvic acid, two ATP, and two electron carrying NADH molecules.
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Which surface ocean current transports cool water to lower latitudes?
Gulf Stream
Peru Current
West Greenland Current
East Australia Current
Peru current is the surface ocean current which transports cool water to lower latitudes and is denoted as option B.
What is Latitude?This is a term which is used in geography and it means the coordinate that specifies the north–south position of a point on the surface of the Earth or another celestial body
Peru current on the other hand is known as the cold-water current of the southeast Pacific Ocean which is as a result of it being responsible for the transportation of cool water to lower latitudes on the earth and is therefore the reason why it was chosen as the correct choice.
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If bears find insects after they move decaying logs, they more frequently move decaying logs. This most clearly indicates that finding insects is a:
a. reinforcement.
b. respondent behavior.
c. spontaneous recovery.
d. classically conditioned habit.
If bears find insects after they move decaying logs, they more frequently move decaying logs. This most clearly indicates that finding insects is a: Reinforcement.
Natural selection may improve the reproductive isolation (also known as pre-zygotic isolation and post-zygotic isolation) between two populations of a species through the process of reinforcement. This happens as a result of selection working to prevent the development of hybrid people who aren't very fit. It is frequently referred to as the Wallace effect and was first proposed by Alfred Russel Wallace. Theodosius Dobzhansky is responsible for developing the contemporary notion of reinforcement. He imagined a species that is allopatrically isolated, in which the two groups mate during secondary contact and give rise to hybrids that are less fit. Due to the hybrid's incapacity to give birth to live offspring, natural selection favors individuals of one species over those of the other in terms of reproductive success.
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which of the following describes an advantage of using a recombinant plasmid for dna cloning over pcr? A)PCR is more likely to have errors introduced in the copying process.B.)Recombinant DNA plasmids are able to create large amounts of copies more quickly than PCR.C.)PCR can only be conducted in eukaryotic cells.D.)PCR requires prior knowledge of the sequence in question, while a recombinant plasmid does not.
Option B, Recombinant DNA plasmids have an advantage over PCR because they are able to create large amounts of copies more quickly than PCR.
PCR, or Polymerase Chain Reaction, is a technique that allows for the amplification of specific DNA sequences, but it requires multiple cycles of heating and cooling to copy the DNA, which can take a relatively long time. PCR the other hand, recombinant DNA plasmids can be used to create many copies of a specific DNA sequence in a single step, using bacteria as a host. The bacteria will naturally replicate the plasmid along with its own DNA, thus producing many copies of PCR the plasmid containing the desired DNA sequence. This is a faster and more efficient method for creating multiple copies of a specific DNA sequence.
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describe the differences between apocrine and merocrine (eccrine) sweat glands. supplement with illustration of both of them.
Apocrine sweat glands:
Associated with hair follicles, apocrine sweat glands only become functional throughout adolescence. Sweat is secreted by an apocrine gland through a coiled structure that is followed by a duct. The hair follicle is where the duct enters.Merocrine sweat glands:
A watery sweat is produced from birth by merocrine sweat glands, which are present throughout the skin.A straight segment and a secretory coiled section make up a merocrine sweat gland. These particular sweat glands are about a tenth of the size of apocrine sweat glands.Learn more about sweat glands here:
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Which of the following statements about the biosynthesis of geranyl diphosphate are correct? Select all that apply.The reactive intermediate is an allylic carbocation.The reactive intermediate adds to a double bond.
.The reactive intermediate is an allylic carbocation.
The reactive intermediate adds to a double bond.
Both claims are true; during the biosynthesis of geranyl diphosphate, an intermediate called an allylic carbocation is formed, and it joins with a double bond to produce geranyl diphosphate.
Ionic species known as carbocations have a positive charge on the molecule's carbon atom. Typically, they develop as an intermediary during different chemical reactions. Steric hindrance and the +I impact of alkyl groups linked to the carbocation's C+ dictate the stability of carbocations .The positive charge is delocalized over the two terminal carbons because the conjugated allyl carbocation's actual structure is a mix of the two resonance structures. The allyl carbocation becomes more stable than a typical primary carbocation as a result of this delocalization.
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Based on the data in the table, what is the most likely reason that female tree frogs care for their eggs?
What is optimal foraging theory?
What does denature mean? In other words, how is an enzyme’s shape related to its function?
Answer:
Down bellow
Explanation:
A denatured enzyme refers to an enzyme that has lost its normal three-dimensional, or tertiary, structure. Once an enzyme loses this structure and is denatured, it is no longer able to function.
Which of the following yield greater than 4 kcalories per gram?Select one:a. Plant fatsb. Plant carbohydratesc. Plant proteinsd. Animal proteins
Option A, Plant fats Specifically, fats yield 9 kcalories per gram. This is more than double the amount of energy obtained from carbohydrates and proteins which yield 4 kcalories per gram each.
Fats yield greater than 4 kcalories per gram. Fats are a rich source of energy and are stored in the body's adipose tissue. They also play a vital role in maintaining the structural integrity of cell membranes and in providing insulation for the body. Fats can be found energy in both plant and animal sources. Plant fats are commonly found in nuts, seeds, and vegetable oils. Animal fats are found in meats, butter, and dairy products. It's important to note that not all fats are created equal energy and some fats, such as trans fats, are considered to be unhealthy and should be consumed in limited amounts.
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26. Which of the ff are leading cause of neonatal mortality in Ethiopia ? A. Pretorm,jaundice & malnutrition B. Diarrhea,malnutrition & asphyxia C. Preterm,infection & asphyxia D. Infection,sepsis & diarrhea
The leading cause of neonatal mortality in Ethiopia are C. Preterm,infection & asphyxia .
What is the main factor contributing to newborn deaths in Ethiopia?One of the main causes of newborn morbidity and mortality in Ethiopia is birth asphyxia. Birth asphyxia-induced death reveals a considerable lapse in ANC follow-up, fetal monitoring throughout labor, and the beginning of the newborn's resuscitation after birth.
According to the current study, asphyxia, infection, and prematurity are the main causes of late newborn fatalities, whereas asphyxia, prematurity, and asphyxia are the main causes of early neonatal deaths.
Therefore, option C is correct.
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The questions below will help determine which restriction enzyme should be used to make a plasmid that contains both an intact vgp gene and a functional ampR gene. Answer questions 1-4 by selecting from the answer choices on the left. Drag the correct answer to the right of each question.
1. BamHI, HaeIII, and HindIII
2. BamHI, EcoRI, and HaeIII
3. BamHI, EcoRI, and HindIII
4. BamHI only
BamHI only restriction enzyme should be used to make a plasmid that contains both an intact vgp gene and a functional ampR gene
What is plasmid ?A plasmid is a tiny extrachromosomal DNA molecule that exists in a cell but is physically distinct from chromosomal DNA and has the ability to multiply on its own. Plasmids are occasionally detected in archaea and eukaryotic organisms, although they are most frequently discovered as tiny, circular, double-stranded DNA molecules in bacteria.
In contrast to a cell's chromosomal DNA, plasmids are tiny, circular, double-stranded DNA molecules. Plasmids naturally exist in bacterial cells and certain eukaryotes as well. Plasmid genes frequently give bacteria genetic advantages, such as antibiotic resistance.
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The beak color of chickens has a complete dominance relationship where black beaks are dominant over yellow beaks. There are 2100 individuals with the genotype DD, 2450 individuals with the genotype Dd and 450 individuals with the genotype dd. A) Find: the frequency of the dominant and recessive alleles and the frequency of individuals with dominant, heterozygous, and recessive traits. P(D)= P(d)=_ Dd dd Frequencies Number of individuals B) The next generation of chickens has a population of 4000. There are 3360 with black beaks and 640 with yellow beaks. Is this population in Hardy-Weinberg Equilibrium?
A- The frequency of the dominant allele, D, is 0.27, and The frequency of individuals with dominant traits is 0.09. B- the population is not in Hardy-Weinberg equilibrium.
A) The frequency of the dominant allele, D, is found by adding the number of individuals with the DD genotype (2100) and half the number of individuals with the Dd genotype (2450/2 = 1225) and dividing by the total number of individuals (2100 + 2450 + 450 = 5000). P(D) = (2100 + 1225) / 5000 = 0.81. The frequency of the recessive allele, d, is found by adding the number of individuals with the dd genotype (450) and half the number of individuals with the Dd genotype (2450/2 = 1225) and dividing by the total number of individuals (2100 + 2450 + 450 = 5000). P(d) = (450 + 1225) / 5000 = 0.27.
The frequency of individuals with dominant traits (black beaks) is found by adding the number of individuals with the DD genotype (2100) and the number of individuals with the Dd genotype (2450) and dividing by the total number of individuals (2100 + 2450 + 450 = 5000). P(DD + Dd) = (2100 + 2450) / 5000 = 0.93. The frequency of individuals with heterozygous traits is found by taking the number of individuals with the Dd genotype (2450) and dividing by the total number of individuals (2100 + 2450 + 450 = 5000). P(Dd) = 2450 / 5000 = 0.49. The frequency of individuals with recessive traits (yellow beaks) is found by taking the number of individuals with the dd genotype (450) and dividing by the total number of individuals (2100 + 2450 + 450 = 5000). P(dd) = 450 / 5000 = 0.09
B) The Hardy-Weinberg equilibrium states that the frequency of alleles in a population will remain constant from generation to generation in the absences of genetic drift, mutation, migration or selection. To be in Hardy-Weinberg equilibrium, the observed genotype frequencies must be equal to the expected genotype frequencies based on the allele frequencies. In this case, the observed genotype frequencies do not match the expected genotype frequencies based on the allele frequencies. Therefore, the population is not in Hardy-Weinberg equilibrium.
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which of the answer choices is not a contributor to genetic drift? bottleneck random change in allele frequency population size founder event natural selection
Natural selection is not a contributor to genetic drift.
What is the main difference between genetic drift and natural selection?Genetic drift and natural selection are two mechanisms that can lead to changes in allele frequencies within a population. The main difference between the two is that genetic drift is a random process that occurs due to chance events, whereas natural selection is a non-random process that occurs due to the differential survival and reproduction of individuals based on their genetic makeup. Genetic drift can occur in any population size, but it is more pronounced in small populations. Natural selection, on the other hand, requires a population to have variation in traits and a mechanism by which certain traits are more favorable than others for survival and reproduction.
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with reference to camel and reptile discuss how animal adapted to life in desert
Camel and reptiles are both animals that have adapted to life in the desert.
Camel:
Camels have thick fur or hair that helps insulate them from the hot sun and retain moisture.
They have wide, padded feet that help them walk on sand without sinking.
Camels can go long periods of time without drinking water because they can store water in their humps.
Reptiles:
Reptiles are cold-blooded, which means they can tolerate the extreme temperatures of the desert.
They can conserve water by spending most of the day in burrows or under rocks where it is cooler.
Some reptiles, such as the desert horned lizard, can survive by storing water in their bodies.
Some species like the desert tortoise, can bury themselves underground to escape from the heat.
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complete question :
How have camels and reptiles adapted to life in the desert?
Explain whether a graph was the appropriate type for the data being presented. (example, its a line graph but should have been a pie graph)
Explain mistakes in the way a graph is set-up. (example, the line graph did not use consistent or equal x-axis units)
How and what data could you arrange in a graph. (example, I could make a pie graph with this data)
Analyze a graph and explain some conclusion(s). (example, this bar graph showers fewer people will ____________
No, a line graph is not the appropriate type for the data being presented if it should have been a pie graph.
What is Line graph?A line graph is a type of graphical data representation that shows how a certain value or set of values have changed over time by connecting a number of different data points.
Data trends or changes over time are frequently visualised using this technique.
Line graphs—also known as line charts—are used to display quantitative data gathered over a certain subject and a defined time period.
There is a line connecting each data point to the others.
In statistics, a line graph is a distinctive type of graph that is frequently employed. In relation to another quantity, it shows how one quantity has changed.
This graph, for instance, might be used to illustrate how the cost of various chocolate flavours fluctuates.
Usually, a two-dimensional XY plane is used to plot this variation.
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5. Identify figure 5.1 Fig. 5.1 a. Label epidermis, cortex, phloem, conjunctive tissue, protoxylem and metaxylem 6. Given figure is of secondary growth in stem label the figure. a. List the stages in secondary growth.
Dicot roots undergo secondary growth in two stages: a) the development and activity of the vascular cambium; and b) the development and activity of the cork cambium.
Between the xylem and phloem in roots is a collection of parenchymatous or sclerenchymatous cells known as conjunctive tissue. Within the body of the plant, xylem transmits sap and water, and phloem delivers organic food. These cells initiate the lateral roots and vascular cambium during the secondary growth. The pith is minute or barely noticeable. The lateral meristems, which are inactive in herbs or herbaceous plants, are responsible for the secondary growth of plants, which results in an increase in stem thickness. There are two categories of lateral tissues that participate in secondary growth: vascular cambium and cork cambium.
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21.1.2 Quiz: What Is Science?
What must scientists assume when using scientific laws to make
predictions?
A. The universe acts in the same way as it acted in the past and will
continue to act in the future.
B. There is enough empirical evidence to turn a theory into a law.
C. The process of science will always uncover the truth.
D. The universe is always changing, and new laws will need to be
discovered all the time.
sorry
Explanation; doesn't know the answer
