Question

steps of oxygen cycle​

Answer 1

Explanation:

Oxygen is constantly used and created by different processes on planet Earth. All these processes together make up the oxygen cycle. The oxygen cycle is thus a biogeochemical cycle that describes the movement of oxygen within the earth’s three main reservoirs – the lithosphere (land), the hydrosphere (water), and the atmosphere (air), which make up the earth’s biosphere.

We now know that the oxygen cycle is a process by which oxygen is generated and used. What are these processes?

Oxygen is Produced by :

1. Plants – Plants produce oxygen via photosynthesis.

2. Sunlight – Some oxygen is produced when sunlight reacts with water vapour in the atmosphere.

Oxygen is used up in :

Respiration – All organisms use oxygen for respiration.

Decomposing – When plants and animals die, they decompose. This process uses up oxygen and releases carbon di oxide into the air.

Rusting – Also called oxidation, this process causes metals to rust. Also a process which uses up oxygen.

Combustion – The process by which fire is generated also requires oxygen, along with heat and fuel. This process also uses up oxygen and releases carbon di oxide into the atmosphere

Answer 2

here is your answer

• Photosynthesis :–

During the day, plants take energy from the sun, carbon di oxide from the air, and water from the soil to make their food.

• Respiration :–

The oxygen that is released by plants is used by humans, animals, and other organisms for respiration, i.e. breathing.