Dichotomous Leaves key

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture

Atype of organism that no longer exist on earth is said to be