Factors that do not affect the appearance of a coast from the water side include

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

About how much of the cell mass is watet

The diagram shows a chicken embryo and a human embryo