Answer:
revolutionizing oil and gas drilling across the country. However, without rigorous safety regulations, it can poison groundwater, pollute surface water, impair wild landscapes, and threaten wildlife.
Explanation:
4.B)Baby mice can vary...
The causes of great migration because some native Amercians were Hunter gathers so they could hunt and get their food ans some other Native americans used agricultural, but there was 1 problem in the winter they colden't plant or find food so they had to migrate. Did that help?
In Yellowstone the Pike fish were eating all of the trout causing the bear to eat the deer causing the wolves to not have food and therefor throwing the whole ecosystem out of balance