Question

oceans cover a large percentage of the earths surface, forming a massive hydrospheric system. what is the main concern related to pollution in oceans? immigration patterns of marine life pollution that runs off from the continents the lifespan of aquatic animals

Explanation:

Ocean pollution is often caused by contaminants running - off from continents, such as chemicals, plastics, and nutrients. This runoff can harm marine ecosystems. Immigration patterns of marine life are not directly the main concern related to pollution. While pollution affects the lifespan of aquatic animals, the source of pollution (continent - runoff) is a more fundamental concern.

Answer:

pollution that runs off from the continents