What do all vertebrates and invertebrates have in common? A) They are prokaryotic.
B)They are covered by an outer skeleton.
C)They are multicellular.
D)They are bilaterally symmetrical.

The instructions for making proteins come originally from

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. a few months later, she accomplishes this same task relatively easily. the change in abilities is most likely due to