8. In highly populated regions, large amounts of runoff, caused by
development, can run into nearby streams. This runoff can be warmer
than the existing water in the stream. This warm runoff will most
likely

A. kill some species of fish as they cannot handle the
higher temperature of water.

B. cause the stream to become cleaner by killing
bacteria with the heated water.

C. decrease the amount of nitrogen for plants in the
soil under the water.

D. increase the amount of oxygen available to
organisms in the water.