Answer:
"The population starts to die off to return to carrying capacity."
Explanation:
When a population has maxed out the space it has to live, something has to come to kill it off so the natural balance would be restored. What kills the population can vary. It can be lack of resources, illness, predators, etc.
The rising of deep cold currents to the ocean surface is called<span>
<span>upwelling
</span></span>Hope this helped :)