Which of the following statements is true about external and internal fertilization?
a. internal fertilization doesn't require sexual intercourse.
b. external fertilization doesn't require sexual intercourse.
c. all animals that lay eggs use external fertilization.
d. all animals that lay eggs use internal fertilization.

here's your

hope it

a. to encourage apoptosis

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.