Question

Oceans give us almost half the oxygen we breathe. Tiny marine organisms, such as plankton, make this possible. What do you think would happen to all living beings if pollution harmed these planktons and they could no longer produce enough oxygen?

Answer 1

If pollution severely damaged plankton and they were unable to produce enough oxygen, it could have serious consequences for life on Earth:

• Lower Oxygen Levels: A major reduction in oxygen would make survival difficult for humans and other organisms that need oxygen.
• Food Chain Disruption: Plankton form the base of marine food chains, so their decline could reduce fish populations and harm other sea life, affecting the food supply of millions of people.
• Faster Climate Change: Plankton absorb carbon dioxide, so their loss could lead to higher CO₂ levels and worsen global warming.
• Ocean Acidification: Changes in the ocean’s chemistry could harm shell-forming organisms and marine ecosystems, causing further damage to ocean life.