The biosphere encompasses all living organisms and their environments, including:

* All plants and animals: This includes everything from microscopic bacteria to giant sequoia trees and blue whales.

* All ecosystems: Forests, grasslands, deserts, oceans, lakes, and even the soil and atmosphere.

* All interactions between living things: This includes competition, predation, symbiosis, and the flow of energy and nutrients.

The biosphere is a complex and interconnected system, and its health is crucial for the survival of all life on Earth.