Answer:
7.C 8.A 9.B 12.D 13 B
Explanation:
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Answer:
1.bacteria, garter snakes, tigers
The answer is none. carbon has a symbol (c) but there is no symbol for carbohydrates because its not a chemical compound.for example fats or vitamins or minerals
Constants are factors that are not changed in the experiment. Since the experiment is testing different colors of light on plant growth, light color is being changed, and is therefore not a constant. Hope this helps! :)