If they went extinct the whole food chain would be out of balance.
If the number of phytoplankton decrease the food chain would decrease in the ocean.
It would be extinct. As in no longer in existence. It would not be here anymore.
other animals that relied on it would die and come extinct
we would all be in caves or extinct
they would be fat
they will be extinct
They become extinct.
It would effect the food chain and other marine life would become extinct
bullfighters would be out of a job
It would be sad.
There would be no human nature>3
then you would not even be here