The independent variable here is option b. the plant food.
In the given experiment, the hypothesis is whether adding plant food to the lawn affects the height of the grass.
The dependent variable that will reflect changes due to alterations in other variables would be the height of the grass.
To determine the cause of one factor over another in experiments, two variables are required. The independent and dependent variables are these. In an experimental study, the independent variable can be changed, manipulated, or adjusted. On another variable, which is a dependent variable, the impact of such manipulation is shown. The outcome of the experiment can be determined by tracking changes in the dependent variable.The cause is the independent variable. Its value is unaffected by the other study variables. The effect is the dependent variable.Hence, the independent variable here is option b. the plant food.
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Describe the importance of DNA and RNA as molecules essential for the transmission of genetic information.
Explanation:
Dna is the genetic informational molecular and its important to identify an organism off another and Rna is a part of the Dna itself
Relate two ways in which a scientific theory and a scientific law are similar
Both scientific laws and scientific theories are based on observations and experimental evidence.
Both will be rejected if if it cannot be made to adapt to the new findings or knowledge.
What are scientific theories?A scientific theory is a well-tested and well substantiated explanation of a natural phenomena that is widely accepted.
There are scientific theories which are commonly accepted today and they include:
big bang theoryatomic theorycell theoryquantum field theoryScientific theories are based on observations and experimental b and must be made to adapt to new knowledge or findings.
In conclusion, a scientific theory can be modified and expanded on or be rejected if certain criteria are not met.
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What are two organisms in the food web that belong in the plant kingdom?
Answer:
They are cut off in the picture, but the plants in the bottom left and right are in the plant kingdom.
A team of scientists and engineers is working together to develop a new cleaning product. The team has identified a species of bacteria that gets energy by breaking apart lipids and oils. The team wants to isolate the key substance that the bacteria use for this process, and then adapt the substance for the new cleaning product. Which macromolecule should the team try to isolate from the bacteria?
Answer:
A protein that specifically binds liquids or oils.
How does an organism composed of relatively small cells have an advantage over one made of larger cells?
The surface area-to-volume ratio of a cell diminishes with growth. If the cell were in the form of a cube, the same reasoning would hold true. The plasma membrane won't have enough surface area if the cell enlarges too much to accommodate the volumetric rise in diffusion rate.
In other terms, a cell gets less effective as it develops. One technique to increase efficiency is to divide, while another is to create organelles with specific functions. Smaller single-celled creatures have a high surface-to-volume ratio, which enables them to rely on material and oxygen diffusion into the cell (and waste diffusion out) to survive. This method can be more effective if the objects have a larger volume to surface area ratio. Larger animals need specialized organs (such as the lungs, kidneys, and intestines) that efficiently increase the surface area accessible for exchange activities, as well as a circulatory system to transport materials and heat energy between the organism's surface and core.
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Identify the following as radiolarians, foraminiferans, or both, using the following key (use the letters in the blanks to answer the questions):
R = Radiolarians
F = Foraminiferans
RF = Radiolarians and foraminiferans
- These have endoskeletons composed of silicon dioxide.
-Globigerina sp. is an example.
- These have colorful shells composed of calcium carbonate.
-Fossil species of these are helpful in correlating the age of geologic strata.
-These have threadlike, branched pseudopods.
- Stylatractus sp. is an example.
-These are fossil species that form limestone.
- Sediment of these organisms can be greater than 4,000 meters thick.
- These have thin, stiff pseudopods.
- These are found in marine environments.
Radiolarians are protozoans of the phylum Actinopoda. They have tapering pseudopods that protrude like lightning around the cell. All radiolarians are marine. While heliozoans are marine or freshwater.
What are the characteristics of foraminifera?Foraminifera are unicellular organisms that are distinguished from protozoa by having a network of filamentous pseudopods and a carapace (called testa) of variable composition and complexity, in which a cytoplasm provided with one or more nuclei is housed.
RF- They have endoskeletons composed of silicon dioxide.
F-Globigerin sp. it is an example.
R- They have colored shells composed of calcium carbonate.
F- Fossil species of these are useful to correlate the age of geological strata.
F-They have branched and filiform pseudopods.
R-Stylatractus sp. it is an example.
FR-These are fossil species that form limestone.
A- The sediments of these organisms can be more than 4,000 meters thick.
A- These have thin and rigid pseudopods.
FR- These are found in marine environments.
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The map below shows the locations of three cities: Los Angeles, California; Oklahoma City, Oklahoma; and Myrtle Beach, South Carolina. The map also includes information about prevailing wind directions (dotted lines) and the location of cold water (solid lines) and warm water (dashed lines) ocean currents.
Rank the cities based on their summer high temperatures, with 1 being the coolest summer, and 3 being the warmest summer.
According to map summer high temperature the correct series of countries are Oklahoma, Oklahoma city, California, South Carolina, Los Angeles, and Myrtle Beach. The most hottest city is Oklahoma.
What is map?Map is defined as a sketch or representation of various countries, routes, rivers, boundaries, oceans, mountains, and building, as well as temperature on a paper which is designed and sketched in such a way that a person can take help to understand the various related topics such as temperature, weather, rivers and routes through it.
The countries which are very near to the equator are considered to be the warmest countries and the people or citizens of that countries are having high percentage of melanin in their body.
Therefore, According to map summer high temperature the correct series of countries are Oklahoma, Oklahoma city, California, South Carolina, Los Angeles, and Myrtle Beach. The most hottest city is Oklahoma.
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how do immunizations work with viruses?
Answer:
immunisations can help protect against certain diseases by imitating an infection. This type of imitation infection, helps teach the immune system how to fight off a future infection. Sometimes, after getting a vaccine, the imitation infection can cause minor symptoms, such as fever. Such minor symptoms are normal and should be expected as the body builds immunity.
Once the vaccinated body is left with a supply of T-lymphocytes and B-lymphocytes that will remember how to fight that disease. However, it typically takes a few weeks for the body to produce T-lymphocytes and B-lymphocytes after vaccination. Therefore, it is possible that a person infected with a disease just before or just after vaccination could develop symptoms and get that disease, because the vaccine has not had enough time to provide protection. While vaccines are the safest way to protect a person from a disease, no vaccine is perfect. It is possible to get a disease even when vaccinated, but the person is less likely to become seriously ill.
Which of the following should not occur when you quote four or more lines from a character's speech in the body of an essay?
Cite the lines
Introduce the lines
Indent the lines
Underline the lines
Underline the lines should not occur when you quote four or more lines from a character's speech in the body of an essay.
What is character's speech?
The mannerisms and speech patterns of the character—shy and reserved, forceful and forthright, sly, humorous—also reveal something about that person's personality. Without using stereotypes, the character's social and ethnic background is reflected in both the speech's substance and delivery. If a character is verbally incapacitated, that should say something.
The character, according to the urban dictionary, can refer to either mental and moral virtues or a lack thereof, or it might be a figure in a play's act. Although the term "character" is frequently used, it should be noted that given the current political context, it is now more frequently used in a derogatory manner.
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The idea of evolution has been tested repeatedly and has much evidence to support that life changes over time. The idea of evolution is a
hypothesis
theory
observation
Answer:
theory
Explanation:
observation leads to hypothesis which leads to theory
what are two ways in which termites actually contribute to plant growth
Answer:
1. Termites help to aerate the soil and improve drainage.
2. Termites also help to break down organic matter in the soil, which release nutrients that are essential for plant growth.
Explanation:
Give Brainliest if I helped!
1. Not based on logic or logic is exaggerated
a. science
b. pseudoscience
2. Results can be reproduced by others
a. science
b. pseudoscience
3. Explanations generally are not testable
a. science
b. pseudoscience
Answer:
1pseudoscience
2science
3pseudoscience
Some students grew sunflower plants in their school's biology laboratory. The following table and graph show the conditions and results of the experiment after three weeks. Use this information to answer the following questions.
Your question is incomlete
The question is incomplete, please refer below for complete question along with their answers (attaching a picture for the results of the experiment also):
1. Explain if it was controlled experiment?
A. Yes, the given experiment is a controlled experiment, that is, it has an experiment group and a control group.
2. Define a probable hypothesis for the experiment along with stating the variables.
Hypothesis: Different wavelength of light affects the growth of plants. Independent Variable: color of lightDependent Variable: Plant Growth3. Name the experimental subjects?
A. Plant A and Plant B.
4. Name the control.
A. Plant C because it is kept in standard lighting conditions (i.e. white light).
5. List the names of the controlled variables in the given experiment?
A. Temperature, humidity, and water.
As stated in the question, the entire process is an experimental setup where tests are being done to see how well plants thrive in a regulated environment. The different variables, including temperature, humidity, and water are fixed. After three weeks under these regulated conditions, several plants display different growth.
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Explain why some areas that are surrounded by land (such as the Red Sea) experience a lower pH value overall than the open ocean in genera
Due to the dissolving of minerals carrying hydrogen ions into the water body, some places that are surrounded by land generally have a lower pH than the open ocean.
Why do some places with a land border have a lower pH value?
The hydrogen ion concentration in a medium is determined by that medium's pH.While a high pH indicates a low hydrogen ion concentration, a low pH indicates a high hydrogen ion concentration.Due to the existence of minerals with a high concentration of hydrogen ions, areas that are surrounded by land have low pH levels.The breakdown of minerals carrying hydrogen ions into the water body causes some locations that are surrounded by land to have a lower pH value generally than the open ocean in general.
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You measured the absorbance of a dilute solution of indigotine at the same intervals across the spectrum and you blanked the spectrophotometer at each wavelength prior to measuring the absorbance of the dye sample. Why?
At each new wavelength, the spectrophotometer was "blanked" to ensure that measurements of the absorption of water and cuvette did not conflict with those of the dye.
Since the water and cuvette likewise ingest light, the spectrophotometer won't gauge their retention, it is essential to "clear" the gadget prior to estimating an example's retention at each new wavelength.
Since the stretch chosen was great for estimating the arrangement due to having high absorbance esteem, the ingestion of indigotin arrangement was estimated at similar spans.
To permit the instrument to zero out these foundation readings and just report values for the build of interest, spectrophotometers are likewise adjusted utilizing a "clear" arrangement that we set up that contains the parts of the answer for be all dissected however not the one build we are trying for.
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Which of the following substancces does NOT bioaccumulate and, therefore, is NOT biomagnified through a food chain in the environment?
A. DDT
B. mercury
C. lead
D. oxygen
The substance that does not bioaccumulate and therefore, is not bio-magnified through a food chain in the environment is oxygen (option D).
What is biomagnification?Biomagnification is the process, in an ecosystem, in which a higher concentration of a substance in an organism is obtained higher up the food chain.
The contaminants that can be bio-magnified in a polluted environment are usually heavy metals such as mercury, arsenic, and pesticides such as polychlorinated biphenyls and DDT.
Oxygen is a naturally occurring gas that is beneficial in the environment, hence, does not bioaccumulate in living organisms as it is readily used.
Therefore, oxygen does not bioaccumulate and biomagnify through a food chain in the environment.
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how is gallium obtained and separated from nearby substances?
PLLSSS HELP
Gallium(III) hydroxide in potassium hydroxide solution can be electrolyzed to produce the metal.
What is the purpose of gallium?It is crucial for Blu-ray technology, mobile phones, blue and green LEDs, and touch switches with pressure sensors. Most metals are easily alloyed with gallium. Particularly in low-melting alloys, it is employed. Because of its high boiling point, it is perfect for recording temperatures that would cause a thermometer to vaporize.
Does gallium react with gold?Furthermore, because gold and gallium can produce alloys with low melting points, it is not surprising that a significant amount of the underlying GaAs dissolves during the alloying cycle. The end result is a contact with good electrical characteristics but one that is quite atypical morphologically and challenging to duplicate.
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Give 3 examples and explain how intelligence is based on Nature.
What part of the cell is responsible for letting water into our cells when dehydrated?
Answer:
The part of a cell that contains RNA that helps in protein synthesis. The large and abundant vesicle of a plant cell is called a vacuole. It contains fluids and helps in storage of substances, building material, and water. The cell wall, central vacuole, and chloroplasts are the distinguishing parts of a plant and animal cell.
Homologous traits are those with a similar structure and function derived from a common ancestor. Analogous traits represent adaptations to a similar environment but from distantly related organism. Consider the structure and function of the flagella found on eukaryotic and prokaryotic cells. Are the flagella an example of a homologous or analogous trait? Defend your answer.
Answer:
Analogous trait
Explanation:
Explain how the sodium/potassium exchange pump in the axon of neurons
maintains polarity. (2 marks)
Explain why polarity in an axon is necessary.
The sodium-potassium pump maintains cell polarity by moving ions in and out against their concentration gradient, thus maintaining a negative electrical voltage within the cell.
What is the sodium/potassium exchange pump?The sodium/potassium exchange pump is necessary for the exchange of potassium ions for sodium ions, this will be found in the cell membrane and will help maintain the functioning of the cell and the body in general. This process of exchanging sodium for potassium is going to be done against its concentration gradient, since this is impossible by cell media alone, since it is an unfavorable process for the cell, it is going to be necessary to spend energy in the form of ATP, hydrolyzing it, releasing the energy found in its bonds.
Therefore, we can confirm that the sodium-potassium pump maintains cell polarity by moving ions in and out against their concentration gradient, thus maintaining a negative electrical voltage within the cell.
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How to create rain?
The answer is HIGH, COLD,LOW
The answer should be cold
Six images of organisms are below.
Drag and drop each organism to place them in the correct order of succession, from first to last, in an area consisting mostly of rock.
A
First: D
F
B
C
Last: E
Answer:
C or B
Explanation:
I don't know the answer but Hope it's help ◉‿◉
Another student thinks a constant should be the speed that the skateboard travels. Is this correct? Explain.
A student thinking that a constant should be the speed that the skateboard travels is not correct.
What is Speed?This is referred to as the rate of change of position with time and the unit is meter per second (m/s).
Speed = distance/time
For a body to have a constant speed, then it means that the sum of all the external forces acting on it is zero. This isn't possible because the numerous forces such as friction, drag etc won't always equal zero which therefore means the student's reasoning is false and not correct and is the most appropriate choice.
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Distinguish between descriptive, correlational, and experimental research
The goal of descriptive research is to offer a snapshot of the existing situation. Finding relationships between variables is the goal of correlational research. Experimental studies aim to evaluate cause and effect.
What is the research about?A population's or phenomenon's characteristics are described through descriptive research. It does not provide an explanation for when, how, or why the features developed. Instead, it answers the "what" query.
With a correlational research design, correlations between two variables—or more—are examined without any of the variables being under the researcher's direct control or manipulation. It is a form of quantitative study that is not experimental.
A study that carefully follows a scientific research strategy is called experimental research. It consists of a hypothesis, a controllable variable, and variables that can be measured, calculated, and compared. Most crucially, controlled environments are used to conduct experimental research.
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Why is active transport necessary for cells?
A. because diffusion is a very slow process
B. because only so many molecules can participate in diffusion per day
C. because sometimes molecules can't get through the cell membrane on their own
Answer:
C Because some molecules can't get through the membrane on their own
Which piece of information provided the stimulus for the shift from traditional classification to modern classification? An understanding that organisms have not changed over time
Answer:
BRO WE GANSTA
Explanation:
Choose
an animal that interests you.
Explain how you know that this
organism is an animal.
Explanation:
Elephant:- warm blood and bulky in mass have visible ears, are property of Mammel, Mammel is branch of animal
Which of the following occur during mitosis? (Check all that apply.)
A. Cell function slows down
B. The cell divides
C. Chromosomes divide into two groups
D. DNA replicates
E. Proteins are synthesized
Mitosis refers to the cell division process that suffers each diploid cell to produce two new daughter diploid cells. Options A, B and C are correct. A. Cell function slows down, B. The cell divides, C. Chromosomes divide into two groups.
What is mitosis?Mitosis is a cell division process through which a diploid somatic cell or germ cell (2n), produces two daughter diploid cells (2n).
Before mitosis, the whole-cell first suffers duplication of its content during the interphase. Then, mitosis occurs, and then it separates during cytokinesis.
Mitosis occurs in somatic cells and in germ cells.
Options A, B and C are correct.
A. Cell function slows downB. The cell dividesC. Chromosomes divide into two groupsRemember that DNA replication occurs during the interophase, before mitosis.
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Answer:
CORRECT IS A B C
Explanation:
have a nice day.
In which part of the cell do ribosomes perform protein synthesis? (1 point)
O nucleus
O vacuole
O cytoplasm
O lysosome
Answer:
nucleus
Explanation:
in eukaryotes, ribosome get their order for protein synthesis from the nucleus
