In an For every
environment, there is an upper
and lower limit that governs the
growth of the population.
A. factor
B. plant
C. person
D. rock

the correct answer is c   with the systems

the cell cycle is the final answer! : )

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