As marine biologists, what do Dougherty and Bassos-Hull say regarding how damaged the oceans are becoming?

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins