Answer:Variation in traits can be caused by variation in protein molecules within individuals' cells. Protein molecules' structures affect their function and the way they connect to other molecules.
Explanation: ^^^ hope it helps :)
Answer:
Cactus plants are able to survive in drier environment because they are able to store water for long periods.
I believe that B and D are the only answers that I am sure of. C is incorrect and A seems incorrect as well. E may be a correct answer, but you will need to check the chemical equation. Hope this helps!
Answer:
the substance that they are missing is called chlorophyll, which all green leaves have