Answer:
fresh water source makes it easier for people to settle making more people settle where there is water.
Explanation:
Answer:
in the Paleozoic Era the trilobites, fish, land plants, and amphibians evolved throught out the Paleozoic Era. In the Mesozoic Era birds, reptiles, mammals, and flowering plants appeared or evolved throught out the Mesozoic Era. In the Cenozoic Era humans and mammals evolved throught out the Cenozoic Era.
Explanation:
hope this help
Answer:
they are gas giants (i think)
Explanation:
I believe the correct answer is option B. Demographers are researchers who most often study a population, its people, and its trends.They study subjects such as the geographical distribution of people, birth and death rates, socioeconomic status, and age and sex distributions in order to identify the influences on population growth, structure, and development