To which of the following is a salamander most closely related?
a) lizard.
b) snake.
c) shark.
d) toad.
e) mole.

After which event could you say that evolution has occurred? question 1 options: an allele frequency changes in a population. a white-eyed fly is born into a population of brown-eyed flies. a new predator comes into an environment. an animal gets fat.

Choose the molecule that is described by each phrase. energy used during long activities:

Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass