Which of the following describes fertilization?
A. the process of pollen moving from place to place
B. when an animal is attracted to a flower
C. the changes that occur in organisms over time
D. when a sperm cell and egg cell come together
A. the process of pollen moving from place to place
B. when an animal is attracted to a flower
C. the changes that occur in organisms over time
D. when a sperm cell and egg cell come together