How are the carbon, nitrogen, and oxygen cycles similar? a. they are all biogeochemical cycles.
b. they all involve an interaction between living and nonliving elements.
c. they are all part of the earth system.
d. all of the above.

The nitrogen, carbon, and oxygen cycles are naturally occurring cycles in which the matter present in the Earth system is cycled through the biotic and abiotic components. These components interact with each other and among themselves during the cyclic process. Therefore, all three statements are part of these cycles.

Further Explanation:

The Earth acts as a closed system for the matter present inside it. Therefore, all the elements required for the chemical and structural processes of life are obtained from the already present matter within the Earth’s crust. This matter is continuously cycled within the Earth’s system and forms the biogeochemical cycles as they involve biological, chemical and geological processes. The oxygen, nitrogen, and carbon fall under the gaseous cycle and the oceans or the air acts as the reservoir. The transportation and storage of these elements occur through biogeochemical cycles in order to be used by the living organisms.

In the oxygen cycle, the oxygen moves across the atmosphere, the lithosphere, and the biosphere which are the components of the Earth. The photolysis is the process by which oxygen is liberated in the atmosphere. The atomic oxygen is produced from the breakdown of molecular oxygen with the help of Sun's ultraviolet radiation. The free oxygen then combines with the oxygen molecule to form ozone or . This oxygen cycle in the atmosphere is important as it shields the Earth from harmful radiations. The main cycles through which oxygen moves in the biosphere are photosynthesis and respiration performed by the plants and animals respectively. In the lithosphere, the oxygen is freed as a result of chemical weathering when the oxygen-containing mineral comes in contact with a pure element.

The exchange of carbon compounds in the environment which includes the pedosphere, atmosphere, geosphere, biosphere, and atmosphere is done by the carbon cycle. In the carbon cycle, the carbon is incorporated into the organisms from the atmosphere and recycled back into the atmosphere.

The nitrogen circulates in multiple forms through the marine and terrestrial ecosystem as well as the atmosphere by the nitrogen cycle. The processes included under the nitrogen cycle are ammonification, denitrification, and nitrification.

Learn more:

1. Learn more about difference in DNA and RNA

2. Learn more about similarity between aerobic and anaerobic respiration

3. Learn more about site of protein synthesis

Answer Details:

Grade: High School

Subject: Ecology

Chapter: Biogeological cycles

Keywords:

Biogeochemical cycle, biosphere, components of life, carbon cycle, oxygen cycle, nitrogen cycle, atmospheric reservoir.

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