What are the two most important processes in the cycling of oxygen in and out of the atmosphere

What controls activities within a eukaryotic cell?

Which of the following is a true statement? a. individuals evolve to have adaptations. b. individuals have adaptations that can change over time. c. individuals have traits that may or may not make them successful at reproduction. d. populations cant evolve, only individual organisms.

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm