the biggest threat to the health of our estuaries is the
a. erosion due to the constant movement of water, either tides, sea level flux, or currents.
b. direct and indirect activities of man that contribute to pollution and deposition of sediments.

One of the purposes of transcription is to produce a sequence of bases that

Migration is a. the movement of organisms from a native location to a foreign location b. the movement of organisms from a foreign location to a native location the movement of organisms from their water supply to their food supply d. the seasonal movement of organisms between locations c. select the best answer from above

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?