There are multiple benefits of growing algae in bioreactor such as : 1. They act as a CO2 fixation 2.Wastewater treatment 3. Could act a filter for pond as they produce oxygen in good quantity. 4. They also act as a scrubber and same for treating wastewater turning it to cleaner water.
Animals will asphyxiate a condition in which the body and most importantly the brain lacks a supply of oxygen. which is called or known as oxygen deprivation
As they produce food by the process of photosynthesis which cannot be done by anyone else. Plants use chlorophyll, CO2 and H2O in photosynthesis( which is a biochemical process). Plants became a cause of life on earth. Hence plants are the ultimate source of food on earth.