Answer:
Birthrate increases or death rate decreases.
Explanation:
Birthrate refers to people being born, so if more people are born the population rises. Death rate refers to people dying and the population shrinking, so if it decreases less people are dying allowing the population to increase more.
Answer:
d.condensation
Explanation:
evaporation is liquid to gas
condensation is gas to liquid
Answer:
D disruption of hibernation or migration cycles
It is the upper mantle. The layer under the crust of the Earth.