Why are emperor penguins considered a species?
a. they all look alike.
b. they can mate and produce offspring that can mate.
c. they can mate and produce offspring that cannot mate.
d. they all walk in a similar manner.

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.

Which locations on the map are low-pressure areas? a b c d e

List five ways we are indebted to phytoplankton