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
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Answer:
D it is taken in from the air
Explanation:
Carbon dioxide is in the air and plants use it to make food.
Answer:
I believe this answer would be C. It looks fairly stable so it should remain that way over time.
Explanation:
MMT stands for Manual Muscle Testing. In this test, the muscle disorders are examined such as muscle weakness or paralysis. It is a part of physical therapy where it is important to test both the left and right side to assess the physical strength of the muscles of a patient.
