The scientific method is a way to test a hypothesis and gain a better understanding of the world.
What is the scientific method?The scientific method is a process used to explore observations and answer questions.
The usual process involves making conjectures -that would be the hypotheses-, drawing predictions resulting from a logical consequence, and carrying out experiments based on those predictions.
The ultimate goal is to test a scientific hypothesis.
Thus, this could be the answer.
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organisms swimming on the surface of water are
Answer:
.
Explanation:
organism swimming on surface of water are plankton
Answer:
plankton
Explanation:
they are plankton
Which are vectors?
animals
water
air
food
objects
Answer:
A vector is a quantity or phenomenon that has two independent properties: magnitude and direction. The term also denotes the mathematical or geometrical representation of such a quantity. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight.
I need help with this!!! The question is:
What are two pieces of evidence Darwin used to support his theory of evolution by natural selection?
Answer:
fossil, biogeographical, and anatomical evidence.
Explanation:
pbs
which statement of osmosis is correct?
Answer:
The process in which the water molecule moves from a region of higher solvent concentration to the region of lower solvent concentration.
The energy which drives this process is called osmotic pressure.
Which of the following are effects of climate change ?
Group of answer choices
Food shortages
Increase in forest fires
Unpredictable rain fall
More extreme weather events
Conflict over natural resources
Answer:
Unpredictable rain fall
In what way are all living organisms on earth simalar
Answer:
Cells
Explanation:
Not only do all living organisms breathe, eat, and reproduce, but they all have cells. Not sure if that's the answer you were looking for but hopefully it helps
Based on your knowledge of immunological memory explain to your patient the physiological mechanisms that underlie active immunity and how it protects you from infections. Be sure to include a description of primary and secondary immune responses in terms that she will understand.
Immunological memory refers to the ability of the immune system to react previous antigen infections.
What are primary and secondary immune responses?The primary immune response refers to the initial interaction between the immune system with pathogenic microorganisms (e.g., bacteria).
The secondary immune responses refer to the second contact with the same pathogenic organism, which enables to the organism create specific antibodies against this pathogen through a process called immunological memory.
Active Immunity is a term used to refer to a type of acquired immunity caused by previous exposure to a pathogenic microorganism and/or vaccine inoculation.
Immunological memory leads to a faster and better response of the immune system against pathogen reinfection.
In conclusion, immunological memory refers to the ability of the immune system to react previous antigen infections.
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Which method best helps to prevent wind erosion?
O rotating crops
O decreasing riverbank slopes
O more animal grazing
O avoiding soil compaction
The best method that help to prevent wind erosion is decreasing riverbank slopes. The correct option is A.
What is wind erosion?Wind erosion is the erosion of the top layer of the soil by wind. Top layer contain nutrients of the soil, is it eroded the soil become of fewer nutrients and quality.
Thus, the correct option is A. decreasing riverbank slopes.
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Answer: a. rotating crops
Explanation:
Four students use the centimeter ruler shown to measure an object during an investigation. Each student aligns the edge of the object with the left edge of the ruler as shown above. All four students read the ruler with a measurement of 4.6 cm. Which statement describes the data they collect? The data have high precision but poor accuracy because of a systematic error. The data have high precision but poor accuracy because of a random error. The data have poor precision and poor accuracy because of a systematic error. The data have poor precision and poor accuracy because of a random error.
The data have high precision but poor accuracy because of a systematic error. Thus, the correct option is A.
What is systematic error?An error that is not caused by chance, but rather by a system-wide inaccuracy (in terms of observation or measurement).
The accuracy of a value refers to how close it is to its genuine value. An arrow's proximity to the bull's-eye center is an example. A measurement's precision refers to how repeatable it is. A systematic error has occurred.
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What is the best definition of “fitness” in terms of evolution?
a. The amount of lean muscle mass in an organism
b. The ability of an organism to exercise for a long period of time
c. An organism’s ability to survive to an old age
d. An organism’s ability to survive and produce fertile offspring
Answer:
c. An organism’s ability to survive to an old age
Explanation:
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What advantage do wet areas have over rock layers in terms of fossilization?
They produce more oxygen used to harden the specimen.
They can preserve soft tissue with more details.
They decompose materials at a faster rate.
They are able to preserve very large remains.
Wet areas have an advantage over rock layers in terms of fossilization. They produce more oxygen used to harden the specimen.
Only in river valleys does deposition on land occur often. Sediments built up on river floodplains frequently include fossils. Strong currents and waves can be present in some ocean regions that are home to animal life.Hence, there are evidences that wet areas have an advantage over rock layers in terms of fossilization due to presence of abundant water.Water seeps into the remnants, carrying minerals dissolved in it into the crevices where they crystallize as a result of oxidization. The bones and the sedimentary rock that surrounds them both become harder as a result of these crystalline minerals.learn more about fossilization here: https://brainly.com/question/14529748
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Match the structural formula to the chemical formula for this substance
Answer:
D.) HOCOOH
Explanation:
Structural formulas identify where the atoms/bonds within a molecule are located. Therefore, the atoms need to be listed in order of appearance (left to right). This makes the best answer D.) HOCOOH.
The planets that reside in the inner region of the solar system are called touristinal planets these planets share certain characteristics for example they are they all have a blank structure which would allow people to stand on the surface these planets include Mercury Earth blank and Mars on the four inner planets only Mars and blank have confirmed
satellites
Because their surfaces are rocky, the inner four planets closest to the sun Mercury, Venus, Earth, and Mars are often referred to as "terrestrial planets."
What are the characteristics of these planets?The four innermost planets are known as terrestrial planets because they have features such as a liquid heavy-metal core, at least one moon, and valleys, volcanoes, and craters.
Because these are all Earth-like characteristics, Earth is classified as a terrestrial planet.
These planets share certain characteristics, for example, they are they all have a rocky structure which would allow people to stand on the surface
Thus, these are some characteristics of terrestrial planets.
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Answer:
A
Explanation:
B. Prepare a FLOWCHART for the isolation of the following: (conventional methods only: culture, through a by product and/or immune response) Include the specimen of choice for the indication (given disease).
1. Dysentery caused by Shigella dysenteriae
2. antibiotic associated diarrhea caused by Clostridium difficile (detection of toxin)
3. dermatophyte infection in the nails
4. Dengue fever by immune response
1. Dysentery caused by Shigella dysenteriae is isolated using MacConkey Lactose agar and Xylose Lysine agar
2. Antibiotic associated diarrhea caused by Clostridium difficile (detection of toxin) is isolated using Clostridium difficile selective medium
3. Dermatophyte infection in the nails is isolated using potatoes dextrose agar
4. Dengue fever by immune response is isolated using minimal essential medium (MEM)
1. Dysentery caused by Shigella dysenteriae
Collection of fecal specimens and poultry (100) fecal samples collected from were processed according to published protocols. Streak one loopful of fecal sample on MacConkey Lactose Agar (MLA) and Xylose Lysine agarIncubated at 37 C for 24 hours The MLA plates showing the presence of convex and colorless colonies are considered for further identification. Similarly, the XLD plates showing appearance of presence of translucent or red colored colonies are taken for further identification.2. Antibiotic associated diarrhea caused by Clostridium difficile (detection of toxin)
Mix equal parts of industrial absolute alcohol and the fecal specimen. Homogenize using a vortex mixer. Leave at room temperature for 1 hr. Inoculate on Clostridium difficile Selective AgarIncubate at 37ºC in a conventional anaerobic gas jarObserve after 24-48 hours in anaerobic environment . Use gram stain reagent and Malachite green for morphological study. Observe positive bacillus cell shape with single or chains(2-6)cell and sub terminal endo spore forming after gram staining3. Dermatophyte infection in the nails
Prepare potatoes dextrose agar (PDA)Collect clippings from the nail with a sterile scalpel after carefully washing the site with 70% alcohol. Dissolved in two drops of 10% KOH on a glass slide, if the sample is thick, use 20% KOH Heat the slide few seconds over a spirit lamp, do not allow to boil.Observe preparation under a low power of the microscope in reduced light. Look out for presence of mycelia fragments and the distribution of spores inside.4. Dengue fever by immune response
Dilute blood samples in minimal essential medium (MEM) containing 2% fetal bovine serum (FBS) Add diluent to a cultured monolayer of C6/36 cells for 1 hour with gentle rocking in a 28 °C CO2 incubator.After 1 hour, remove the inoculum and cells Culture for 7 days in MEM with 2% FBS and antibiotics. Collect culture supernatant on day 7 and infect a new batch of C6/36 cellsRepeat the procedure three times to achieve passage 3 (P3) isolates.Learn more about culturing of microorganisms here:
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In a one D process, how many D values would it take to reduce a population of 1010 cells to one surviver?
10 D values would it take to reduce a population of 1010 cells to one survivor.
How is the D value used?The significance of a chemical mechanism can be connected to the antagonism of a specific microbiological species that can be utilised as a biological indicator (BI), and can be defined in words of decimal decrease time (D-value).
Thus, 10 D values would it take to reduce a population of 1010 cells to one survivor.
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How would our interaction with the suns energy differ if our magnetosphere disappeared?
Answer:
Enveloping our planet and protecting us from the fury of the Sun is a giant bubble of magnetism called the magnetosphere. It deflects most of the solar material sweeping towards us from our star at 1 million miles per hour or more. Without the magnetosphere, the relentless action of these solar particles could strip the Earth of its protective layers, which shield us from the Sun’s ultraviolet radiation. It’s clear that this magnetic bubble was key to helping Earth develop into a habitable planet.
a 42 year old woman presents with a painful, 3cm paraovarian cyst located in her broad ligament. ultrasonography reveals the cyst to be adjacent to the utetine tube, and laparoscopic surgery is scheduled. during surgery a small incision is made in the anterior abdominal wall and the scope is inserted into hee peritoneal cavity. what part of the broad ligament would most likely be incised to reach the tumor? provide an explanation
Broad ligaments consists of:-
What is mesometrium?The uterus's mesentery is called the mesometrium. It makes up the majority of the uterus' broad ligament, with the exception of the areas next to the ovary and mesosalpinx (the mesovarium). The mesosalpinx is close by. Among the structures in the mesometrium is the ureter.
Mesosalpinx: The part of the uterus' broad ligament where the ovaries are suspended is called the mesovarium. The germinal epithelium covers the ovary rather than the mesovarium, which would normally be present.
Mesovariun: The broad ligament's posterior extension, which houses the ovary, is known as the mesovarium. It carries the ovarian arteries and nerves and is attached to the ovary's hilum.
For the surgery mesometrium is to be incised to reach the tumor.
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A change in speed and direction of the wind at different altitudes in the same
column of air is called
______________. (2 words)
Answer:
a wind shear
Explanation:
Answer:
The answer is wind shear
Please Help No Random Answers.
Jeff has 10 grams of water and 10 grams of vegetable oil in separate containers. Both liquids have a temperature of 24°C. Jeff heats both liquids over a flame for five minutes. When he’s finished, he discovers that the temperature of the oil increased more than the temperature of the water. What can Jeff conclude from this experiment?
The temperature of the oil increased more than the temperature of the water because vegetable oil has a lower heat capacity than water.
Heat capacity is the ratio of heat absorbed to temperature change by a material. Typically, it is stated in terms of calories per degree. Oil can hold more heat than water. Compared to water, oil can be heated to high temperatures more quickly with a significantly lower energy input because it has a lower heat capacity than water..Oil transfers heat to food more gradually to a fixed temperature than water does. Oil can be heated to a higher temperature than water when it is in a liquid state.Hence, the correct option is D.
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Which best explains why nanofiltration is an important new technology?
It can be used to help regions that have a short supply of usable water.
It can be used as an energy source to produce electricity in regions with limited coal.
It recycles wastewater to be reused for geothermal energy.
It collects solar energy to generate electrical power.
Answer:
It can be used to help regions that have a short supply of usable water.
Explanation:
Essentially, nanofiltration is purifying [often mineral-dense] water.
Access to cheap energy resources, especially fossil fuels, has been a major driver of globalization and growing prosperity. Oil is particularly important because it is major source of:
Group of answer choices
mobile power
effective fertilizers
all of these
geostrategic conflict
Oil is a geostrategic conflict is major source. Thus, the correct option is D.
What is geopolitics?The connection between geography and strategy is made by geopolitics. The foundation of geopolitics is the indisputable fact that all international politics—from peace to war—occur in time and space, in particular geographic contexts and situations.
International relations have been heavily influenced by oil geopolitics. Some contend that much of the conflict in the 20th century was caused by geopolitical competition over access to oil. The current energy transition's increase in renewable energy sources may well alter this situation.
Over the past 120 years, the geopolitics of oil have been a major factor in world affairs. Indeed, others contend that much of the conflict experienced in the 20th century was caused by geopolitical competition for access to and control of oil supplies.
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Which of Mendel's laws or principles explains that traits are passed from parents to offspring individually instead of as pairs, groups, or sets?
Answer:
the law of independent assortment
Explanation:
The law of segregation is the Mendel’s laws or principles explain that traits are passed from parents to offspring individually instead of as pairs, groups or sets. So the correct option is option “C” as far as the given question is concerned. This is a law or principle which states that during the formation of gametes, two copies of each heredity factors separate out so that the new offspring can get one factor of both the parents. This law was the first law in this direction.
Review the chart, which shows the population sizes of three African animals in 1990 and in 2000.
Population Estimates of Animals in Africa in 1990 and in 2000
1990 2000
Lions 100,000 47,000
Cheetahs 50,000 7,500
Zebras 15,000 2,500
Which explanation is best supported by the numbers in the chart?
A. Lion and cheetah populations compete for the food source of zebras, and lions outcompete cheetahs.
B. The dwindling zebra population has led to the decline of the predator lion and cheetah populations.
C. Overhunting of lion and cheetah populations has led to a decline in the food source population.
D. Lion and cheetah populations compete for the food source of zebras, and cheetahs outcompete lions.
The explanation which is best supported by the numbers in the chart is that Lion and cheetah populations compete for the food source of zebras, and lions outcompete cheetahs. Thus, the correct option is A.
What is Competition in the population?Competition in population may be defined as the existence of two or more same or different species that are actively fighting over the same resources and factors that they disseminate.
Competition and predation are the two types of species interaction through which the population of species either increases or decreases.
According to the given chart, it is noticeable that the population drop in predator cheetah and lion populations because of the reduction in zebra lowering population but the in cheetah population is additionally than that of the lion.
Therefore, the correct option for this question is A.
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What are areolar tissues?
Explain with the help of diagram ( optional)
Answer:
cellular connective tissue with thin and relatively sparse collagen fibers.
Explanation:
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The type of tissue which connects and surrounds different organs in the human body. The important function of this type of tissue is that it provides nutrition to the cells and also acts as a cushion to protect the organs from various external forces.
which type of energy do living things use to make sugar using cabon doixide?
Answer:
i believe light energy
Explanation:
im him
Answer:
light energy
Explanation:
Through photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar
nationalgeographic.org
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Curate a collection of diagrams and photographs that illustrate the structure and makeup of DNA, as well as its location in the cell. Then, research a method of using isopropyl alcohol and a liquid detergent in order to extract and observe your own DNA. Photograph your results and add the labeled photographs to your digital DNA gallery.
The isopropyl method of DNA extraction is a lab based technique hence the pictures and results cannot be provided here. The DNA structure consists of a sugar phosphate backbone and a nucleotide base.
The double helix shape of DNA, a two-stranded molecule that seems to be twisted, is what differentiates it from other molecules. Each of the two strands is made up of a phosphate molecule and a lengthy series of nucleotides. a five-carbon sugar molecule known as deoxyribose. a region rich in nitrogen.The majority of DNA is found in the cell nucleus (where it is known as nuclear DNA), but there is also a tiny quantity of DNA in the mitochondria (where it is called mitochondrial DNA or mtDNA).Cellular organelles called mitochondria transform the energy from food into a form that cells can utilize.
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Question: What do all organisms
have in common?
Answer:
All living things have certain traits in common: Cellular organization, the ability to reproduce, growth & development, energy use, homeostasis, response to their environment, and the ability to adapt. Living things will exhibit all of these traits.
The Punnett square is for a test cross of two mice that were purebred for two different traits. What will their offspring be? Fill in the white boxes of the Punnett square with all possible offspring genotypes
Punnett Square BE BE BE BE
be
be
be
be
Given the scenario, their progeny will heterozygous or BbEe.
A purebred white mouse and a purebred black mouse are being crossed.
What is homozygous?A gene region where there are two identical alleles present. Two alleles with the same variation or two alleles that are normal can both be present in a homozygous genotype.
BBEE is black fur.
Bbee has white fur.
Here, the capitalization of allele B signals that it is a dominant allele and that allele B is recessive.
For BBEE, gametes
BE a, b, e, b
Genes for the bbee
a, a, a, a Cross will then have an image linked to it.
As a result, in the example, their progeny would either be BbEe or heterozygous.
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What are the two major types of genes responsible for cancer? What are their normal function
WILL GIVE BRAINLIEST AND THANKS
Answer:
The oncogenes and the tumor suppressor genes
Explanation:
the oncogenes, which function as positive growth regulators, and the tumor suppressor genes, which function as negative growth regulators.
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what is the answer to this question?? an object has a mass of 5g. what force is needed to accelerate it at 6 m/s2?
a. 0.83 N
b. 1.2 N
c. 11 N
d. 30 N
