the source of atmospheric oxygen is?
a)nitrogen cycle
b) green plants
c) water
d) carbon cycle
Answers
Answer:
The main source of atmospheric free oxygen is photosynthesis, which produces sugars and free oxygen from carbon dioxide and water.
Answer:
Concept:
The process by which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as photosynthesis.
Explanation:
The primary source of atmospheric oxygen is green plants, which produce oxygen during photosynthesis as a waste product that is then inhaled by humans for breathing.
Therefore, "Green plants" is the right option.
Photosynthesis is a major component of life on Earth. Plants, algae, and some bacteria carry out the process by utilizing sunlight to create oxygen (O2) and chemical energy that is stored in glucose (a sugar). Then, herbivores gain this energy by consuming plants, whereas predators acquire it by consuming herbivores.
Plants absorb water (H2O) and carbon dioxide (CO2) from the soil and atmosphere during photosynthesis. Water is oxidized, which means it loses electrons, while carbon dioxide is reduced, which means it receives electrons, inside the plant cell. Water is converted into oxygen and carbon dioxide into glucose as a result. After storing energy within the glucose molecules, the plant releases the oxygen back into the atmosphere.
#SPJ3