What is an ecological impact of growing the same crop, year after year, on the same plot of land?
a) drought
eliminate
b) soil erosion
c) nutrient depletion
d) increase in soil fertility

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.

Which type of neuron stimulates muscles to contract?