EVERYDAY SCIENCE

Detailed explanation-1: -Trees give us the oxygen we breathe.

Detailed explanation-2: -Most life on Earth depends on photosynthesis. The process is carried out by plants, algae, and some types of bacteria, which capture energy from sunlight to produce oxygen (O2) and chemical energy stored in glucose (a sugar).

Detailed explanation-3: -Through a process called photosynthesis, leaves pull in carbon dioxide and water and use the energy of the sun to convert this into chemical compounds such as sugars that feed the tree. But as a by-product of that chemical reaction oxygen is produced and released by the tree.

Detailed explanation-4: -Thus, water (H2O) is the source of oxygen released during photosynthesis.

Detailed explanation-5: -Through photosynthesis, humans can again breathe in the oxygen that was produced and survive. Photosynthesis and respiration are the two essential processes that allow life to sustain on earth.