Species change over time. -The mechanism that produces the change is natural selection: the differential survival and reproduction of individuals based on variation in their traits. Natural selection acts on individuals but individuals do not evolve; their descendants do.
Answer:
Look at the attachment =)
Explanation:
B. Spermatogenesis.
Make gametes are called sperm, and
Spermato-sperm
genesis-creation
Half-life is<span> the term for the amount of time it takes 50% of an element to decay</span>
