Photosynthesis is the process where plants take in carbon dioxide and release oxygen.
Explanation:
The sun's heat hits the plant which with the help of water makes carbohydrates, along with the making of carbohydrates oxygen is created. And the oxygen is then put back into the air for other organisms to breathe.
The efficiency, speed and reach of modern transport networks puts people at risk from the emergence of new strains of familiar diseases, or from completely new diseases.