So we have two limestone beds, one of 550 million years old (well, the fossils are, but it suggests that the rock was created around the same area) and another that is 400 million years old. The first one is then older than the second - the correct answer is c!
Answer:
True
Explanation:
The gases absorb energy, which slows or prevents the loss of heat into space. They act like a kind of blanket, keeping heat in and radiating it back downwards and raising the temperature of the Earth.
Answer:
check reason below
Explanation:
death rates decrease due to advanced technologies(better medical institution)
birth rates decrease to high levels of literacy and due to families planning.
