Answer:
Density Difference us the most responsible formation of convention current
The answer is D.
in fact it was the only state I believe to have a population DECREASE
"B" is your answer. Fossil Fuels take millions of years to decay.
Answer:
D
Explanation:
Supermassive black holes are in the center of galaxies. They have an enormous mass, and are not that easy to detect.
They exert a very strong gravitational pull.
