The word bio means “life” and sphere means “living place”. So biosphere means where life exist. All the creature from virus to human being are considered as a part of biosphere . Every organism plays a vital role in this sphere . All plants and animals have their interactions with each other to run this biosphere. All animals and birds are linked to each other via food chain and various ecological cycles. If one of the organisms will eliminate from the system than it will ultimately effect every organism. All the creature has its own value in fulfilling the demand for the biosphere.
Let us discuss a common example what will be happen if there will be no vultures in the atmosphere than it will effect to the food chain of the biosphere . Also vultures feeds on snake than the number of snakes will started increasing day by day. So that’s why every individual is important for biosphere.
We get every thing of our biosphere only like food , water , oxygen ,. Shelter in return we need to protect our biosphere .
Many different cycles like oxygen cycle , phosphorus cycle , water cycle are continuously running in it.
Biosphere is like a great protection of umbrella that protect us from outside atmosphere . We need to preserve our natural resources for our future generations.
Respect and love each organism of environment . Spread love and care with them . Like us they are also a very important part of our biosphere.
Hope you will be satisfied with my answer.