D because kg is mass and cubic cm is volume which Density = Mass / Volume
What happens to the population density and competition if the birth rate decreases?
The birth rate would increase is the population density competition increased.
Hope I helped.
Answer:
objective lenses
Explanation:
objective lenses with different magnifications, screwed into a circular "nosepiece" which may be rotated to select the required lens.
A force that creates something MUST be constructive force so the answer will be B.
Aerophones I think.
oh well brainly want me to type more.
