Answer:
the transfer of genetic material from one population to another
Explanation:
Gradient should be in the blank, hope that helps
Mass..... mass measures the amount of matter in a substance or object
That line would be the first option - <span>“surprisingly, there are some creatures benefiting from all this plastic.”
It is the only line which has a positive connotation because there are still some organisms which don't find plastics in the ocean to be a bad thing. The other options show only negative consequences of plastics being thrown in the oceans. </span>