Biosphere refers to the part of the Earth's surface and atmosphere where living organisms exist. It is the sum total of all ecosystems on the planet, including all the living organisms and their interactions with each other and with the physical environment.

Components of Biosphere:

1. Atmosphere: It is the layer of gases surrounding the Earth that contains oxygen, nitrogen, carbon dioxide, and other gases that support life.

2. Lithosphere: It is the solid, outermost layer of the Earth that includes the soil, rocks, and minerals that make up the Earth's crust.

3. Hydrosphere: It is the water on the Earth's surface, including the oceans, lakes, rivers, and groundwater.

Interactions between Biosphere components:

1. Atmosphere and Lithosphere: The atmosphere and the lithosphere interact through the process of weathering, where atmospheric gases and precipitation break down rocks and minerals. This process releases nutrients that support plant growth.

2. Hydrosphere and Lithosphere: The hydrosphere and the lithosphere interact through the process of erosion, where water carries away soil and rocks from one place to another. This process creates rivers and canyons.

3. Atmosphere and Hydrosphere: The atmosphere and the hydrosphere interact through the water cycle, where water evaporates from the surface of the Earth into the atmosphere and then condenses into clouds. These clouds then release precipitation, which falls back to the Earth's surface.

Conclusion:

In conclusion, the biosphere includes the atmosphere, lithosphere, and hydrosphere, which all interact with each other to support life on Earth. Without these components, life on Earth would not be possible.