answer for this question is A
Answer:
C. natural selection
Explanation:
Natural selection is when the organisms that have the better adaptation so they survive. In this case, the green was the better adaptation so they lived.
Answer;
DNA or protein sequences of shared genes
The MOST accurate way to determine the evolutionary relationship between two animals is through the examination of DNA or protein sequences of shared genes.
Explanation;
DNA or protein sequences of shared genes. Biochemical evidence is extremely accurate in determining the relationship between two organisms. Many animals have been re-classified, due to DNA evidence.
If the solutions and leaf disks were boiled prior to the photosynthesis I think all the leafs would sink. Photosynthesis would not ensue by the reason the proteins would be converted and not useful.
Alternatively, if the solutions and leaf disks were subjected to very cold temperatures the leaf disk will float faster.