The center of a root is called the . epidermis
xylem
vascular cylinder
phloem
PLZ HELP

explanation:

since this is put under health, i would define "ethical (medical) behavior" the way the oath for doctors is recited.   "first do no harm."

but the term in general means when given a choice between right and wrong, we should always choose right. if we do, then we are practicing ethical behavior.

c. orbital shape i hope this is correct