Wilderness is land that is undeveloped by humans. Scientists estimate that a wilderness area needs to be at least 1,500 square miles in order to _____.
Abe sufficiently unaffected by air, water, and noise pollution from nearby human activities
Bhave enough plants to feed animals
Cbe cost effective
Dproceed with secondary succession
Abe sufficiently unaffected by air, water, and noise pollution from nearby human activities
Bhave enough plants to feed animals
Cbe cost effective
Dproceed with secondary succession