Answer:
I don't think that is scientifically proven.
If the pH/temperature fluctuates, the enzyme conditions would no longer be favorable, meaning the enzyme would no longer be able to perform its assigned function. If the conditions become too unfavorable, the enzyme would change shape (denature).
Answer:
Divergent evolution.
Explanation:
Divergent evolution can be defined as the process in which more than one group of the same species (from the same ancestors) evolve and possesses (accumulates) various features or traits such as behavior or bodily structures, thus, resulting in the formation of new species of the living organisms.
Although flowers have a common ancestor, they vary quite differently due to the environment and their specific pollinators. This is an example of divergent evolution.