Answer:
The coronavirus speads mainly from person to person. This can happen between people who are in close contact with one another. Droplets that are produced when a infected person coughs or sneezes may land in the mouths or noses of people who are nearby, or possibly be inhaled into their lungs
I believe the answer you're looking for is photosynthesis, where plants release oxygen and humans use this to release carbon dioxide to the plants.
I think it’s a heavy metal
