The answer is the first one because it doesn't create gases and, the third one doesn't even make any sense so its definitely not that one
A. Ancestors of whales may once have been able to walk.
Answer:
B. The Universe may continue to expand
Explanation:
2 4 and 6 i took the course and that's right
Sex (sexual reproduction), is the act of reproducing. Each species of animal and plant do it in a different way, and some just choose to do it by themselves. And yes, according to a good percent of the population, sex does feel good.