Why do remoras attach themselves to sharks? a to hitch a free ride, b to gain access to free food, c to avoid getting eaten by other fish, d all of the above.

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute