Why is it important to have a control group?

Why is it important to control certain variables?​

Answers

Answer 1
1.A control group is important to an experiment because it allows you to eliminate and isolate those variables.
2. Controlling variables is important because slight variations to the experiment set up could affect the outcome significantly

Hope this helps :)

Related Questions

What can be found in prokaryotic cells?

Select all that apply.

A. DNA

B. nucleus

C. ribosomes

D. plasmids

I think all of the above but I am not quite sure... this question popped up on my unit test and I wanted to ask to make sure.

Answers

Answer:

ribosomes and DNA i never heard of the last one

Explanation:

edgeunity 2020 unit test

Define what is meant by a "dominant" gene, and a "recessive" gene

Answers

Answer:

Dominant is relating to or denoting heritable characteristics which are controlled by genes that are expressed in offspring even when inherited from only one parent. Recessive is relating to or denoting heritable characteristics controlled by genes that are expressed in offspring only when inherited from both parents, i.e., when not masked by a dominant characteristic inherited from one parent

Explanation:

What is it called when leaves release excess water

Answers

it is known as transpiration

ASAP Please what is the answer to this question?
By the ways, this is not a quiz or a test. It is a benchmark review.

Answers

Answer:

C. It will decrease the percentages of almond and apple crops because lesser numbers of honey bees are available for pollination.

Explanation:

The decrease in honey bees population will affect the ecosystem by decreasing the percentages of almond and apple crops which will lead to lesser numbers of honey bees available for pollination. Almonds and apple crops rely on honey bee colonies for pollination. So, a decrease in the population of honey bees will have an adverse effect on the availability of the crops and food supply. For most variety of almonds, they do not wind pollinate but require cross-pollination in order to produce nut. Other crops that rely on honey bees are watermelon, cucumbers and cherries.

the lowest layer odnbf​

Answers

Answer: ;-; wut? i- my brain cells you just killed my brain cells in 1 sec i-

Explanation:

Lowest layer of wat??

2) Compare and contrast the structure of the nucleotide that makes up DNA and the nucleotide that makes up RNA.

Answers

Answer: DNA contains the nucleotides guanine (G), cytosine (C), adenine (A), and thymine (T). RNA contains the nucleotides guanine (G), cytosine (C), uracil (U), and thymine (T). The difference between the two is that RNA contains uracil (U) rather than adenine (A).

The base pairs in DNA are adenine with thymine and guanine with cytosine. The base pairs in RNA are uracil with thymine and guanine with cytosine.

Convection currents are powered by:
A. Heat
B. Motion
C. Pressure
D. Density
If you’re gonna guess, do not bother commenting

7th grade Science *Earth

Answers

the answer is a. heat

11. Coughing can expel ____ from the body.
A. mucus
B. food particles
C. phlegm
D. All of the above​

Answers

Answer:

D. All of the above​

It is either d or A but most likely A

what is meant by ecosystem diversity?

Answers

Answer:

Is the variation in the ecosystems found in a region or the variation in ecosystems over the whole planet.

Explanation:

it deals with the whole existence of humanity.

plssss help asappppp

Answers

Answer: I think it might be B

Explanation: Im learning the same thing

As we know that the leaves of plants are waterproof due to cuticle. On the same way, take some pieces of paper of leaf size and make them waterproof. after completion, put half of these paper pieces in cold water and half in hot water. Do all the pieces of paper remains waterproof? Explain your observation and result with justifications

Answers

Answer:

its answer is:

No all the pieces of paper not remains waterproof. After making water into its pieces in the shape of leaves, it can't be able to defend water. As paper is non living thing and leave is part of living being so, paper is not waterproof but leaves is waterproof.

What are the three types of osmosis? What happens during each phase?

Answers

An isotonic solution is when the solute concentration is balanced with the concentration inside the cell , the water movement still moves between the solution, but the rates are the same in both directions, the water is balanced inside and outside the cell .

A hypotonic solution is when the solute concentration is lower than the concentration inside the cell. water moves into the cell and can cause the cell to swell; cells that don’t have a cell wall, such as animal cells, could explode in this type of solution.

A hypertonic solution is when the solute concentration is higher than the concentration inside the cell. In a hypertonic solution, the water moves out of the cell and causes the cell to shrivel.
Answer: There are three types of osmosis solutions: the isotonic solution, hypotonic solution, and hypertonic solution.
An isotonic solution is when the solute concentration is balanced with the concentration inside the cell. ...
A hypotonic solution is when the solute concentration is lower than the concentration inside the cell.
Sorry I couldn’t find the 3rd one.....

I WILL GIVE BRAINLIEST1
Social classes is a characteristic of civilization that refers to

groups of people ranked by their place in society
people who come together to learn a trade
men and women who enjoy spending time together
citizens who vote in a similar way

Answers

Answer:

the answer is B

Explanation:

Sorry about those idiots from the other question

The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane?
A. simple osmosis

B. active transport

C. simple diffusion

D. facilitated diffusion and please give a reason why you chose this answer

Answers

Answer:

B. active transport

Explanation:

Answer:

b

Explanation:

because active transport obey the concentration gradient..

Do any of you guys know what tectonic plate and fault caused the 2001 Seattle earthquake?

Answers

Answer:

The Puget Sound area is prone to deep earthquakes due to the Juan de Fuca tectonic plate's subduction under the North American Plate at 3.5 to 4.5 cm a year as part of the Cascadia subduction zone

Explanation:

Hope dis help

Answer:

North American plate and the San Juan de Fuca plate,

Explanation:

i hope this helps

Given the diagram below, which of the following ordered pairs represents the
vertex, A?

O A. (b cosc, b sinC)
O B. (b cos C, c sinc)
O C. (a cosB, a sinB)
O D. (a cosc, b sinC)

Answers

Answer:c

Explanation:because cosin of b is c

(a cosc, b sinC) pairs represents the vertex A in this diagram. Hence option D is correct.

What is Vertex ?

In geometry, a vertex (in plural form: vertices or vertexes) is a point where two or more curves, lines, or edges meet. As a consequence of this definition, the point where two lines meet to form an angle and the corners of polygons and polyhedral are vertices.

The vertex of an angle is the point where two rays begin or meet, where two line segments join or meet, where two lines intersect (cross), or any appropriate combination of rays, segments, and lines that result in two straight sides meeting at one place.

In a polygon, a vertex is called "convex" if the internal angle of the polygon is less than π radians otherwise, it is called concave.

Hence option D is correct.

To know more about Vertex :

https://brainly.com/question/30940247

#SPJ7.

photosynthesis is composed of two main parts (light-dependent and light independent)these reaction occur in different structures of the chloroplast.what is the term that best describes light independent reaction and where does it occur
a) calvin cycle, stroma
b)photosystem 1, stroma
c) photosystem 2, thylakoid membranes
d) photosystem 1 and photosystem 2, thylakoid membranes

Answers

Answer:

the answer is A Calvin cycle stroma

When the water availability of a plant's environment decreases, the plant can respond by closing its stomata. This reduces the amount of water that the plant loses through its leaves due to transpiration. Closing the stomata also reduces the amount of carbon dioxide that the plant can take in through its leaves, which will most likely result in A. a decreased rate of photosynthesis. B. no change in the cellular processes of the plant. C. an increased rate of photosynthesis. D. an increased rate of cellular respiration.

Answers

Answer:

A. a decreased rate of photosynthesis.

Explanation:

Stomata is a structure in the leaves of higher plants, which they use majorly for the purpose of gas exchange. However, the process whereby plant loses water called transpiration also occurs via the stomata. In a situation whereby the availability of water in a plant's environment is low, the plant responds by closing its stomata in order to conserve water (reduce the amount of water that the plant loses through its leaves due to transpiration).

Closing the stomata by plants means not allowing ample carbon dioxide (CO2), which is needed for the process of photosynthesis to occur, to enter the plant. This will most likely result in a DECREASED RATE OF PHOTOSYNTHESIS.

Describe how chimpanzees use touch to communicate.

No searching please. I already tried that and it wasn’t the answer you need for the question.

Give brainliest!

Answers

Since Chimpanzees can't talk, they make sounds, body posture, facial expressions or they use their hands, kinda like sign language but in their own way that they understand, they also use touches as a way to communicate how they feel or what they are trying to convey, what they have available to them they use to rely a variety of messages to each other.

match terms w definitions ​

Answers

Answer:

Bipolar or Polarity : B

Surface Tension: F

Capillary: C

Ion: A

Dissolving: D

Specific Heat: E

Answer:

1. Bipolar or Polarity  b

2. Surface tension     f

3. Capillary action     c

4. Ion                          a

5. Dissolving             d

6. Specific heat         e    

Can someone explain question 4?

Answers

Over time, as oxygen levels decrease, CO2 levels increase. Respiration is correct as it uses oxygen as a reactant and releases CO2 as a byproduct.

Gestational diabetes occurs when a pregnant woman has high levels of blood sugar. Cells in the pancreas usually keep blood sugar levels normal, but hormones produced during pregnancy deactivate the cells. After pregnancy, hormone levels return to normal, and so do the pancreas cells. Is this an example of DNA or the environment controlling gene expression? Explain your answer

Answers

Answer:

environment controlling gene expression  

Explanation:

Gestational diabetes generally occurs in pregnant women. The sugar level in the bloodstream becomes little high than the normal range during pregnancy. But the glucose level returns to normal after child birth.

The pancreas secrets insulin which helps to lower the blood sugar level in the body. But during pregnancy, the placenta releases some of the hormones which dilutes the effect of insulin. This is known as insulin resistance. So now the pancreas secretes more of insulin to overcome this insulin resistance for the body. Now if a woman during pregnancy does secrete more insulin, the glucose level increases in the body and the woman develops gestational diabetes.

Gestational diabetes greatly depends upon obesity and the ethnicity of the women, but a definite genetic link has not been identified.

This it is a result of the environment control gene expression.

A large canyon, with a large river running through the bottom, was MOST LIKELY formed by​

Answers

Answer:

the movements of rivers, tectonic activity, and erosion.

Theres multiple slides! WILL GIVE BRAINLIEST. Please help, science isnt my strong suit. This will bring my grade up i cant fail science, please. There wasn't science so i picked biology.

Answers

Explanation:

11. C

12.B

13.B

14.B

15.C?

16.D

17.A?

18.D

4 How many genetically different kinds of gametes an individual with genotype Aabb can
produce?
a)1
b)2
c) 4
d) 8​

Answers

Answer:

I believe the answer is C.) 4

.pls help fast
Is the fossil record complete for humpback whales? Explain your answer.

Answers

Answer:

No, the fossil record is not complete because with further fossil discoveries, and more study, it may continue to tell paleontologists how modern whales came to behave the way they do.

Explanation:

How do most bacteria get food?

Answers

Answer:

Foodborne illness/contamination

Explanation:

Most dairy and meat products are at risk for having salmonella, this is why you must cook

it so you can kill the bacteria. These foods can contaminate fresh veggies that you don't cook which can cause you to get sick.

All volcanoes have at least one vent, or opening. Which of the following does not erupt through volcanic vents?

A. lava
B. liquid water
C. gases
D. ashes

Answers

B.Liquid Water
Explanation: lava gushes out ashes go up and gases when it erupts only water does not erupt.

Why do you think the sugar beets are harvested in the Fall?

Answers

Answer:

Harvest deliveries are limited and controlled due to the warm weather and poor storage conditions.

Explanation:

A cookie recipe uses 3 cups of flour to make 15 cookies. How many cookies can you make with this recipe with 4 cups of flour. (assume you have enough of the other ingredients.)

Answers

Answer:

20 cookies

Explanation:

we are given that

three cups of flour is used to make 15 cookies

3 cups of flour is used to make=15 cookies

one cup of flour will be used used to make 15/3 cookies that will be 5

1 cup of flour is used to make =15/3=5

for 4 cups of flour we will multiply 4 on both sides

hence t will give

4 cup of flour is used to make =5*4=20 cookies

So,

According to recipe 4 cup of flour is used to make 20 cookies

15/3 = 5 cookies per cup
5 * 4 = 20, you can make 20 cookies
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