HEEP PLEAS WILL GIVE Why does ballast water pose a threat to the environment?
A. It uses precious fresh water resources.
B. It is full of oil and industrial chemicals.
C. It transfers wildlife to new ecosystems.
D. It causes ships to sink if not properly managed.

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