Which group of drugs slow down the central nervous system
a.) stimulants b.)hallucinogens c.) depressants d.) narcotics

a time line cause it goes from 685 to 978

surface mining destroys mountain tops, landscapes, forests and wildlife habitats. on top of that, it leads to soil erosion and destruction of agricultural land. the landscape changes can also disrupt river channels and streams, which leads to flooding. which, can destroy plant life and other animals as well.

explanation: