What is the name given to any group of tissues and organs that coordinate to perform related biological functions? A.
an organ system
B.
a prokaryote
C.
a cytoskeleton
D.
an organelle

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation:

d.embryo is the correct one