Answer:
Cold air is denser than warm air, it will sink below warmer air, pushing warm air upward.
Explanation:
Answer: It is verified by testing it. If the data supports the hypothesis, then we consider the hypothesis to be verified and true. If however, the data does not support the hypothesis or refutes it, then the hypothesis is in trouble, and we have to come up with a different hypothesis to explain the observations.
Explanation:
Answer: A. Average rainfall has decreased
Explanation:
I might be wrong. sorry if i'm wrong