You perform an experiment in which you take 16 pots of strawberry plants and give half of them 1 gram of ammonium nitrate per liter of water and the other half just get water. Each group is then split in half again, and exposed to either 8 or 16 hours of light each day. You monitor the height of the plants for four weeks. You observe that increasing ammonium nitrate and light both increase plant height.
-A plant takes up nutrients like ammonium nitrate to maintain
A) natural selection.
B) asexual reproduction.
C) homeostasis.
D) evolution.
E) sexual reproduction.
Correct Answer:
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