Which of the following is a difference between viruses and prokaryotes? 1.Viruses and prokaryotes both adapt in response to their environments.
2.Viruses and prokaryotes originated at the same time on Earth.
3.Viruses and prokaryotes are both unicellular with a nucleoid region.
4.Viruses and prokaryotes both depend on a host to reproduce.

it would be c. xylem.

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands