Question

Which of the following is an example of how a species may change over time?

A.
Bacteria become resistant to antibiotics.
B.
Dog fur becomes thicker in the winter.
C.
Turtles become male or female based on incubation temperature.
D.
Humans become immune to a certain illness after vaccination.

Answer 1

Answer: possibly A

Explanation: B an C are not it because they are more like mutations. D humans don’t always become immune.