explain the nitrogen cycle,carbon cycle and oxygen cycle in simple way for class9
Answers
Answered by
5
Oxygen cycle:
Importance of oxygen: Oxygen is also an essential component of biomolecules. It is use for respiration also. It is available in molecular form (O2)in the air, forming about 20.94% of it. Some dissolved in water.
Use and release : oxygen is also released as a part of CO2 by decay of dead organic matter.
Some of oxygen added to air as CO2, H2O , sulphur dioxide and nitrogen oxides during burning.
Carbon cycle: Carbon is generally considered the basis of life. Carbon atoms , because of their unique ability to join together in long chains, and rings, form the backbones for the complex organic molecules.
PLS mark me as brainlist
Importance of oxygen: Oxygen is also an essential component of biomolecules. It is use for respiration also. It is available in molecular form (O2)in the air, forming about 20.94% of it. Some dissolved in water.
Use and release : oxygen is also released as a part of CO2 by decay of dead organic matter.
Some of oxygen added to air as CO2, H2O , sulphur dioxide and nitrogen oxides during burning.
Carbon cycle: Carbon is generally considered the basis of life. Carbon atoms , because of their unique ability to join together in long chains, and rings, form the backbones for the complex organic molecules.
PLS mark me as brainlist
Attachments:
Answered by
7
NITROGEN CYCLE : Nitrogen gas makes up around 78% of our atmosphere. It forms a part of many molecules like proteins, nucleic acid and some vitamins. Nitrogen is also found in other biologically important compounds such as alkaloids and urea. Nitrogen is thus an essential nutrient for all life forms.
CARBON CYCLE : In photosynthesis carbon-dioxide and water produce carbohydrate and oxygen. While respiration oxidize food to give carbon-dioxide and water.
In ocean and in rocks carbon-dioxide dissolves readily in water. In rock it get stored as calcium carbonate.
Carbon can either be liberated to atmosphere through respiration or can be passed to animal when being eaten or remain in plant even after death.
After death of plant or animal decomposition take place and carbon dioxide get released to atmosphere. They can also be buried inside the earth and converted to coal or natural gas . Natural gas and Coal are fuels and on combustion they release carbon dioxide back into the atmosphere.
Carbon dioxide goes into the oceans and excess of carbon-dioxide can cause global warming
OXYGEN CYCLE : Steps of oxygen cycle.
Step 1)Animals take in oxygen through the process of respiration. And release CO2 into the atmosphere.
Step 2)Carbon dioxide, released by animals is used in plants in the process of photosynthesis.
Step 3)Plants release oxygen into the atmosphere as a by-product of photosynthesis.
step 4)Fuels need oxygen for combustion so they take oxygen and release CO2 into the atmosphere as a by product along with other gases like N2 etc.
Step5)CO2 is released into the air in the process of decaying of dead animals and plants.
step 6)This CO2 is taken by plants for the process of photosynthesis and O2 is released, and this process continues...
hope this will help you!!
CARBON CYCLE : In photosynthesis carbon-dioxide and water produce carbohydrate and oxygen. While respiration oxidize food to give carbon-dioxide and water.
In ocean and in rocks carbon-dioxide dissolves readily in water. In rock it get stored as calcium carbonate.
Carbon can either be liberated to atmosphere through respiration or can be passed to animal when being eaten or remain in plant even after death.
After death of plant or animal decomposition take place and carbon dioxide get released to atmosphere. They can also be buried inside the earth and converted to coal or natural gas . Natural gas and Coal are fuels and on combustion they release carbon dioxide back into the atmosphere.
Carbon dioxide goes into the oceans and excess of carbon-dioxide can cause global warming
OXYGEN CYCLE : Steps of oxygen cycle.
Step 1)Animals take in oxygen through the process of respiration. And release CO2 into the atmosphere.
Step 2)Carbon dioxide, released by animals is used in plants in the process of photosynthesis.
Step 3)Plants release oxygen into the atmosphere as a by-product of photosynthesis.
step 4)Fuels need oxygen for combustion so they take oxygen and release CO2 into the atmosphere as a by product along with other gases like N2 etc.
Step5)CO2 is released into the air in the process of decaying of dead animals and plants.
step 6)This CO2 is taken by plants for the process of photosynthesis and O2 is released, and this process continues...
hope this will help you!!
Similar questions