If red light is shined on a population of red walking beans then they would not be as red as when started because they need light to survive and red light is present but they reflect it until they need it to survive.
Mutations that naturally occur can change phenotype and if it is beneficial to the species then it will be past on if it is no then it will die before passing it on.
Answer:
Not sure about this, but I believe it's pressure. I'm not sure what exactly you're asking. I hope this helps!
Explanation:
The higher the pressure, the less volume the gas has.
The answer for 21 I think is false
as in any liquid, as heat is added, solutions become more capable of holding more dissolved material . (not sure if this is what you're asking as it seems to be missing information)