Question

How does carbon fixation on earth predominately occurs?

Answer 1

Carbon cycle:

1. The carbon cycle is the process by which carbon compounds are exchanged between the earth's biosphere, geosphere, pedosphere, hydrosphere, and atmosphere.
2. A significant amount of carbon is also trapped in the planet's interior.
3. Carbon is abundant in the earth's mantle and core, and carbon from the lower mantle frequently leaks into the atmosphere due to volcanic activity.

Steps in the Carbon Cycle:

1. Photosynthesis requires plants to absorb carbon from the atmosphere.
2. These plants are consumed by animals, and carbon is bioaccumulated in their bodies.
3. Carbon is released back into the atmosphere when plants and animals die and decompose.
4. Some of the carbon that is not released back into the atmosphere is converted into fossil fuels.
5. These fossil fuels are then used for man-made activities, adding more carbon to the atmosphere.

Carbon cycle parts:

The global carbon cycle is divided into various parts that serve as carbon reservoirs and are linked by exchange pathways.

1. The Atmosphere: The carbon present in the earth's atmosphere is CO2.
2. The Terrestrial Biosphere includes all carbon incorporated into the earth's surface by living beings such as plants and animals living on the earth.
3. Oceanic Carbon Cycle: The creatures that live in the oceans store a certain amount of carbon, as well as inorganic carbon dissolved in the water and carbon present at the ocean's surface.
4. Geosphere: Excess carbon is trapped deep within the earth's crust in the form of mineral and fossil fuel sediments. Limestone sediments had accumulated a massive amount of carbon.