I'm a bit stuck on the order, I need some help figuring this out. :)

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.

9. the history of life on earth is recorded in

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