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Scilla [17]
1 year ago
11

Joe has heard that fertilizer makes tomato plants produce more tomatoes and bigger tomatoes. He decides that he wants to find ou

t if this is true. He buys three different fertilizers and four tomato plants that are all the same. He gives on tomato plant fertilizer A, another tomato plant fertilizer B, another tomato plant fertilizer C, and the last plant he does not give any fertilizer to. He gives them all the same amount of sun, water, and soil. What is the control group in this experiment
Biology
1 answer:
jeka57 [31]1 year ago
6 0

The control group in this experiment is the group of tomatoes that do not receive any fertilizers i.e. fourth tomato plants.

<h3>What is Fertilizer?</h3>

Fertilizer may be defined as any chemical or natural substance which is added to the soil with the intention of enhancing productivity.

All those groups of tomatoes in which fertilizers are added behave as a reference group while those in which fertilizer is not added behave as a control group.

Therefore, it is well described above.

To learn more about Fertilizers, refer to the link:

brainly.com/question/24544067

#SPJ1

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hope that helps! :))

3 0
3 years ago
Explain why and how theories may be changed or replaced over time.
Tpy6a [65]

Answer and Explanation: This is true that theories do change or get replaced overtime. We all know that in any scientific investigation the scientist put forth the theories which are basically the ideas explaining something particular. We also know that the world is experiencing constant changes and those changes could be of Technology or of overall world order so, whenever a scientist gives us the theory, that theory is made according to the situations and environment of that particular time and in future with the passage of time and with the advancement of Technology and other variables, scientist do need to re-evaluate theories. They either make some positive changes keeping in view the changing circumstances of the current situation or discard the theory altogether depending on its nature. The name research itself indicate that scientists research the already searched idea and in that way the New theory which comes after the modification of old theory or altogether the new theory takes place of the old one.

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Marina86 [1]
True

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The side of the epithelia facing the extracellular fluid surrounding the intestine is the_______________side
ehidna [41]

The side of the epithelia facing the extracellular fluid surrounding the intestine is the<u> </u><u>basolateral </u><u>side.</u>

<u />

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learn more about basolateral here: brainly.com/question/13340743

#SPJ4

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