(Q).
Q: What is often the cause of phenotypic differences between identical twins? Choices: - natural selection - genetics - learned behavior - environment A:
(A).
environment

(Q).
Q: As the atoms approach one another, their electron clouds gradually begin to do what? Choices: - magnetize - shrink - disappear - overlap A:
(A).
overlap

(Q).
Q: Like acetic acid, pentanoic acid is what kind of acid? Choices: - hydroxyl - carbonic - amino - carboxylic A:
(A).
carboxylic