Leia Rosales

Biology

7 November, 02:14

The presence of wastes, such as plastic bags and motor oil, in lakes and streams miles away from developed areas, suggests that

a) ecosystems are interconnected and human action can alter ecosystem equilibrium

b) recycling programs have failed to conserve biotic resources

c) natural processes can alter ecosystem stability

d) direct harvesting practices have led to irreversible destruction of ecosystems