(b) The response of the skin to cold weather is an involuntary action. Explain how an involuntary action differs from a voluntary action.

a chair, a bed, and a toothbrush

explanation:

i was told this before by a teacher, so yeah

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

what are the options

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;