Can someone answer the unanswered question for me please?

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

Compare the composition of the moon's surface with the composition of the earth's surface.