The illustration shows bones in four animals. The bones labeled as A are known as and offer evidence of a common ancestor.
penguin
bat
alligator
human
extinct structures
sequential structures
analogous structures
homologous structures

c

explanation:

idk

the answer is false?

the electromagnetic energy from the sun arrives in the form of visible and invisible light.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.