How many independent variables should you test at a time?

A two

B one

C as many as you want

D three

Answers

Answer 1

Answer:

b - one

Explanation:

testing only 1 independent variable at a time ensures that one factor causes a change in your dependent variable

testing more than 1 makes it unclear which independent variable caused a change in the dependent variable

Answer 2
b fsss trust me and the last answer

Related Questions

Which claim is most likely to be based on pseudoscience A. The arrangement of the stars can bring you good luck B. The color of light from a star can tell you how old it is C. The planets in our solar system move around the sun D. The volume of gas will increase if you heat the gas

Answers

The claim 'The arrangement of the stars can bring you good luck' is most likely to be based on pseudoscience.

What is pseudoscience?

Pseudoscience is defined as knowledge that is not obtained or derived from using the scientific method.

From a scientific perspective, the type of knowledge derived from pseudoscience cannot be verified and therefore is meaningless.

In conclusion, the claim 'The arrangement of the stars can bring you good luck' is most likely to be based on pseudoscience.

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Can someone help me please?

Answers

The kind of population growth depicted by the graph is exponential growth.

What is exponential population growth?

It is a kind of population growth that takes place in an environment where the population has no limiting factors.  In order words, there are unlimited resources without any hindrance to the growth of the population.

Such a population grows rapidly as soon as it is able to adapt to its environment and continue growing at maximum biotic potential.

A graphical illustration of the exponential growth usually forms a J shape curve.

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Which of the following is a characteristic of a scientific theory?

a
It explains how nature works.

b
It is based on a single experiment.

c
It should not be possible to replicate its results.

d
It should not be possible to replicate its observations.

Answers

Answer:

explains how nature works

Explanation:

compare and contrast relative dating and radio metric dating

Answers

Answer:

see the file attached!!

Which best explains the effect of reforestation on land?

It allows crops to grow in wide steps along slopes.
It turns land slowly into desert.
It turns habitable land uninhabitable.
It restores trees to areas where they once grew.

Answers

Answer:

D. It restores trees to areas where they once grew.

Explanation:

edge2022 :)

you got this!

The best explanation for the effect of reforestation on land is that it restores trees to areas where they once grew. Reforestation helps in replenishing tree populations, improving soil quality, reducing erosion, and supporting diverse ecosystems. The correct option is D.

What are the effects of reforestation?

The best explanation of the effect of reforestation on land is that it restores trees to areas where they once grew. Reforestation involves the planting of trees in areas where forests have been cut down or destroyed, which can help to restore biodiversity, prevent soil erosion, and mitigate the effects of climate change.

Reforestation does not cause land to turn into a desert or render habitable land uninhabitable. Additionally, while reforestation may indirectly benefit crop growth by improving soil quality and preventing erosion, it does not involve growing crops in wide steps along slopes.

Therefore, the correct option is D.

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How do pollutants add to the problem of plastic in the ocean?

Answers

Answer:

Sea creatures will choke on it and suffers and die and it could make the water brown/unhealthy and sea creature may get stuck in the junk and die after that way.

A cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. Purple offspring result due to incomplete dominance. Then, two of the purple offspring are crossed. What proportion of the offspring from the second cross will be purple?.

Answers

The proportion of the offspring from the second cross that will be purple is 1/2 because parents are heterozygous.

What is incomplete dominance?

In genetics, incomplete dominance makes reference to the phenomenon where both alleles are expressed in heterozygous individuals.

In this case, parents are heterozygous and therefore they can produce three types of offspring.

In this case, the genetic crosses include

Parental lines (P) AA x aaFilial 1 (F1) 100% AaFilial 2 (F2) generation

                                              A          a

                                     A      AA       Aa

                                     a      Aa         aa

In conclusion, the proportion of the offspring from the second cross that will be purple is 1/2 because parents are heterozygous.

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The proportion of the offspring from the second cross will be purple is 1/2, i.e. 50% of the offspring will be purple.

What is Incomplete Dominance?

Incomplete dominance may be defined as a phenomenon in which the F1 hybrid exhibits the characters intermediate for the parental genes.

Due to the heterozygous nature of both parents in the F1 generation, they produce offspring in the genotypic and phenotypic ratio of 1:2:1.

The Punnett square for this cross is described below:

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What do we need from producers in order
to sustain all living organisms on Earth?
A. Producers need to harness solar energy.
B. Producers need to release energy.
C. Producers need to release carbon dioxide.
D. Producers need to break down energy from food. What is the answer

Answers

Answer:

d

Explanation:

Why isa DNA replication regarded as semi conservative?

Answers

Answer:

each helix that is created contains one strand from the helix from which it was copied.

Explanation:

A person who is having problems with blood flowing through their blood vessels to and from their heart is having problems with which major body system digestive system reproductive system circulatory system nervous system

Answers

The digestive system is a major body system affected by blood vessels and heart problems. thus option C is correct.

What is the circulatory system?

To obtain oxygen into the blood, the circulatory system (cardiovascular system) pumps blood from the heart to the lungs. The remainder of the body receives oxygenated blood from the heart via arteries. Oxygen-depleted blood is returned to the heart by veins to restart circulation.

Heart and blood vessels problem directly affect the circulatory system. Blood vessel disease (Vasculopathy) The blood arteries that transport oxygen and nutrients throughout your body and eliminate waste from your tissues are affected by vascular disease (also known as vasculopathy). Plaque, which is composed of fat and cholesterol, slows or obstructs blood flow in your arteries and veins, causing common vascular issues.

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Answer:

C: The digestive system is a major body system affected by blood vessels and heart problems

Explanation:

Question 4 of 10
How would increasing the amount of water in blood affect blood pressure?
OA. Blood pressure would decrease
B. Blood pressure would stay the same
O C. Water is not related to blood pressure
OD. Blood pressure would increase
SURMIT

Answers

Answer:

The answer is D: The blood pressure would increase.

Explanation:

This technique allowed multiple peoples DNA to be compared to look for similarities and differences in order to solve crime

DNA Elimination
DNA Examination
DNA Fingerprinting
DNA Sequencing

Answers

DNA Fingerprinting allowed multiple people's DNA to be compared to look for similarities and differences in order to solve crimes (Option C).

What is DNA Fingerprinting?

DNA Fingerprinting is a molecular biology technique used to compare the genetic material of different samples.

This technique (DNA Fingerprinting) can be used in order to identify a person in a criminal case.

In conclusion, DNA Fingerprinting allowed multiple people's DNA to be compared to look for similarities and differences in order to solve crimes.

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What innovation reduces particulate matter from vehicle emissions

Answers

scrubbers. scrubbers are a type of pollution control device that removes air pollutants like sulfur dioxide, chlorine, hydrogen sulfide, and hydrogen chloride from industrial exhaust

Plants growing in the dark start to fall over because they can no longer
support their own weight. Students want to find out why this is happening.
Which of these is a good hypothesis for an investigation of the problem?

OA. The plants need to absorb glucose from the soil so they can have
more energy.

OB. The plants should start using protein in order to support their
bodies.

OC. The plants need sunlight so they can produce more cellulose for
support.

OD. The plants need more water in order to keep their cellulose from
breaking down.

Answers

Answer: B

Explanation: its ez

You are studying a region of the genome on chromosome 11 that contains several hemoglobin genes and their associated cis-regulatory modules (CRMs). These CRMs are DNA elements where proteins can bind to regulate expression of the hemoglobin genes. These genes are expressed at different times during development. HBB and HBD are expressed in adults, HBG1 and HBG2 are expressed during fetal development, and HBE1 is expressed during embryonic development. GATA1 is a transcription factor expressed in blood cells. What evidence (if any) does not support the hypothesis that CRM B has a function associated with it

Answers

Although part of your question is missing, you might be referring to this full question:

You are studying a region of the genome on chromosome 11 that contains several hemoglobin genes and their associated cis-regulatory modules (CRMs). These CRMs are DNA elements where proteins can bind to regulate expression of the hemoglobin genes. These genes are expressed at different times during development. HBB and HBD are expressed in adults, HBG1 and HBG2 are expressed during fetal development, and HBE1 is expressed during embryonic development. GATA1 is a transcription factor expressed in blood cells. What evidence (if any) supports the hypothesis that CRM B has a function associated with it? (Mark all that apply)

only coding regions of the genome have a functionbiochemical evidencegenetic evidenceevolutionary evidence

The evidence that does not support the hypothesis is genetic evidence because it involves the lack of binding between GATA1 and CRMs.

What is a transcription factor?

A transcription factor is a specific protein that enters in the nucleus of one cell to regulate gene expression.

Transcription factors such as GATA1 are required to bind specific regulatory DNA sequences (e.g., promoters) to activate or inhibit gene expression.

In this case, regulation at different stages of development is likely due to epigenetic factors instead of transcription factor binding.

In conclusion, the evidence that does not support this explanation is genetic evidence.

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What should be considered to classify the five kingdom system?​

Answers

The living organisms are divided into five different kingdoms – Protista, Fungi, Plantae, Animalia, and Monera

On the basis of their characteristics such as cell structure, mode of nutrition, mode of reproduction and body organization.

Which statement regarding rigor mortis in fish is true? Group of answer choices Rigor mortis can last anywhere from 10 to 15 minutes depending on the species, temperature, and condition of the fish when caught. During rigor mortis, the water-holding capacity of the proteins is decreased, which makes fish flesh juicier than that of fish that have not undergone rigor mortis. Cooking fish prior to rigor mortis results in a tough-textured flesh. The stronger the rigor mortis is, the more delicate and desirable the texture of the flesh.

Answers

The true statement regarding rigor mortis in fish is as follows: Rigor mortis can last anywhere from 10 to 15 minutes depending on the species, temperature, and condition of the fish when caught.

What is rigor mortis?

Rigor mortis is a temporary stiffness of a body's muscles and joints following death.

Rigor mortis occurs in fish after the fish dies. The symptoms are as follows:

Harder textureContraction of muscles

However, the appearance of the fish experiencing rigor mortis is dependent on the species of the fish.

Therefore, the true statement regarding rigor mortis in fish is as follows: Rigor mortis can last anywhere from 10 to 15 minutes depending on the species, temperature, and condition of the fish when caught.

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Please help this is due in an hour! ill give brainliest and 20 pts!


Explain the impact on fresh water of:
a. Farming wastes
b. Household pollutants
c. Industrial wastes
d. Erosion
e. Oil and Gasoline
f. heat

Answers

Answer:

Water contamination is caused by waste water from industrial or chemical processes in enterprises. Chemical substances that are easily recognizable in industrial waste water are common. Toxic wastes and organic pollutants are the most common sources of water pollution, which are concentrated in a few subsectors.

Explanation:

what crystals are formed by molten?

Answers

Answer:

quartz

Explanation:

I took a class on rocks

The rise in herd immunity amongst a population can be directly attributed to antibiotic-resistant microorganisms. vaccinations. increased use of antibiotics. improved handwashing. None of the answers is correct.

Answers

The rise in herd immunity amongst a population can be directly attributed to vaccinations. Details about vaccination can be found below.

What is vaccination?

Vaccination is the inoculation with a vaccine, in order to protect from a particular disease or strain of disease

A vaccine is a substance given to stimulate the body's production of antibodies and provide immunity against a disease without causing the disease itself in the treatment, prepared from the agent that causes the disease.

Therefore, it can be said that rise in herd immunity amongst a population can be directly attributed to vaccinations.

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100 points
ROUND TO Thousandths place (3 places past decimal point.)
A hypothetical population of 10,000 humans has 7770 individuals with the blood type AA, 1980 individuals with blood type AB and 250 individuals with the blood type BB.



What is the frequency of the AA genotype in this population? Answer



What is the frequency of the AB genotype in the population? Answer



What is the frequency of the BB genotype in the population? Answer



What is the frequency of the B allele? Answer



What is the frequency of the A allele?

Answers

Answer:

Thats ezy

Explanation:

so fist you add fifa 22 mobile

then you have 21 savage

but wait if you can say it why you can't say it now?????

so that how you get

BBC from a SBC from fifa 22 and maybe BB

describe how the surface of the earth moves, the way it moves and the effects of movement

Answers

Answer:

tectonic plates

Explanation:

and lose very very slowly but it moves towards each other or farther apart because there you are what you called Divergent tectonic plates convergent tectonic plates and contraction tonic plates

Please helppp will give brainlist to the correct answer

Answers

Answer:

B(doubling time = 70/growth rate(r))

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Which statement would least likely be used to describe variation?
Variations are inherited differences between individuals of the same species.
Variations that decrease reproductive success are more likely to be passed on.
Variations may result in changes to an entire population after many generations.
Variations provide some individuals with an advantage.

Answers

Variations that decrease reproductive success are more likely to be passed on. Thus, option "B" is correct.

What are Variations?

Variations refer to environmental or genetic differences between organisms related by descent.

The variations can be due exclusively to the environment, and therefore are not hereditary, but they can also be reproduced by changes in the genetic makeup, being in this case, hereditary.

As you can see, a term related to variations is heredity (the tendency for equals to generate equals, that is, it explains the fact that descendants resemble their ancestors).

Variations that decrease reproductive success are more susceptible to transmission, that is, they are more likely to be inherited as a hereditary factor.

Thus, option "B" is correct.

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why viruses are kept in border line of living and non-living things.​

Answers

They show characteristics of living and non-living things. Example- they can reproduce (characteristic of a living thing)
A characteristic of a non-living thing would be they don’t have cells

An experiment that has only one variable changed

Answers

a controlled experiment

How is selective breeding related to DNA

Answers

Answer:

the animals that are selected for breeding will mix their DNAs while making the baby, so the baby will carry the characteristics of both parents (it depends on if the trait is dominant or recessive

Explanation:

Selective breeding makes use of existing, and naturally present gene variants in species, and the natural process of breeding.

However, genetic engineering involves a direct change to an organism's genome in a laboratory.
Gene variants made through genetic engineering can be passed from one generation to the next.

Which method provides the most accurate evidence for scientists to use when determining evolutionary relationships between two species of animals?
O Identifying fossil patterns in rock strata where the animals live
O Looking for similar vestigial structures in both species of animals
O Comparing genetic sequences in the animals using samples of DNA
O Looking for similarities in the coloration and eating habits of the answer

Answers

Comparing genetic sequences is the most accurate way of determining evolutionary relationships. This is a quantitive measure, ( it uses numbers) we can use gene sequencing to identify how much of the genetic sequence in A is the same in organism B. The greater the similarities the more likely it is they have recently evolved from a common ancestor. The closer the ancestor, the less time has passed which means there’s been less time to develop mutations a base variation. That’s why there’s more genetic similarities between two things that are closely related.
Hope that makes sense

Explain what type of ratio is needed to have maximum efficiency for the cel

Answers

Answer:

surface area to volume (SA:V) is the ratio that is needed to have maximum efficiency for the cell

After mitosis each identical daughter cell has a complete set of.

Answers

Answer:

after mitosis the daughter cell has a set of Chromosomes

Explanation:

Other Questions
(1) The nation's energy use is largely dependent on fossil fuels. (2) These fuels are nonrenewable resources, and they cause pollution. (3) We cannot continue our reliance on a fuel that will eventually run out. (4) Thus, we must find other ways to sustain our energy demands. (5) Pursuing alternative fuel sources is the key to solving our energy crisis.(6) Currently, about 1 percent of energy in the United States is produced by the sun, and solar energy has the potential to become a more widely used energy source. (7) Through different technologies, such as solar cells, scientists have learned to use the suns radiation to create electricity. (8) Solar energy is both inexhaustible and clean. (9) The major limit to this alternative source is that equipment is expensive. (10) Developing a cost-effective way to harness the power of the sun will be a significant development in solving our energy crisis.Read the following sentence.Researchers are working on batteries that store energy generated from solar power, so it could be used at all times.Where in the essay should the above sentence be added and why?after sentence 10 to serve as a conclusionafter sentence 5 as part of the claimafter sentence 6 to support the topic sentenceafter sentence 9 to support the counterclaim The___________ made farming more eddcient meaning that less people were needed to work on farms. This created abundance of workers who could work in factories leadigng to the sucess of the __________ the German surrender in World War I did not includea. collapse of German alliesc. Wilson's Fourteen Pointsb. American entry into the ward.Berlin airlift In the cycle-plane, what is the y-intercept of the graph of the equation y=6 (x-0.5) (x+3) My age this year is a multiple of 7. Next year it will be a multiple of 5. I am more than 20 years of age but less than 80. How old will I be 6 years from now? Two moles of gas A spontaneously convert to 3 moles of gas b in a container where the temperature and pressure are held constant. The sample originally took up 13.9L of volume. What is the new volume of the products? Pls show work :) Question 4 of 25Which sentence uses the subjunctive mood correctly?A. I asked you to lock the doors before you went to bed.B. If May were a stronger athlete, she would have tried out for thetrack team.C. Rocky often demands that everyone pays attention to him.D. I would like to go to the art museum on Saturday if I have time. The functions f and g are defined as follows.f(x)=2x-3xg(x) = -4x-1Find f(-2) and g (7).Simplify your answers as much as possible.f(-2) =X9 (7) = ? A giant pie is created in an attempt to break a world record for baking. The pie is shown below: What is the area of the slice of pie that was cut, rounded to the nearest hundredth?78.13 ft82.43 ft86.31 ft91.98 ft Assume that the heat energy gained by the water is equal to the heat energy lost by the aluminum. use the specific heat equation to solve for the specific heat of aluminum. (hint: because heat energy is lost, the value of q is negative.) A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation. Using this equation, find the time that the rocket will hit the ground, to the nearest 100th of second.y=-16x^2+64x+89 What is the main problem Kwan faces in the story? 1-3 gas stoichiometry! please help and put in steps in every problem. please help if u can HELP ASAP!! ANSWER QUESTION IN PICTURE BELOW!!! Consider the following code using the posix pthreads api: thread2.c #include #include #include #include int myglobal; void *thread_function(void *arg) { int i,j; for ( i=0; i Guided PracticeOld-fashioned windmills are not aerogenerators because Which table represents a linear function?(im trying to help my friend pass) What is the most likely definition of "duplicity"? counterfeiting cunning determination dishonesty 7) Heather records the number of winners of the three Ring Toss game in the table below.Number of Number ofPlayersWinnersGame 112352Game 215563Game 317265Based on the data recorded in the table, how many winners should Heather expect if thereare 750 players? What is the best over the counter medicine for nerve pain.