Which color lined on the graph shows the population reaching, but not surpassing, carring capacity? A. line C
B. line B
C. line D
D. line A

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."