# The Nitrogen Cycle Is Essential For Life On Earth

by TheChessGym | 13 Oct 13:12

The Nitrogen Cycle Is Essential For Life On Earth

Today we discussed the essential elements of the Nitrogen and Phosphorous Cycles and their significance as "Biogeochemical Cycles" referencing the transfer of chemical substances through abiotic and biotic spheres. We learned that Nitrogen comprises approximately 78% of the atmosphere and only 3.3% of the human body's composition. Nitrogen, despite its small composition in the human body, is an essential element in many of the vital functions of muscle construction and building. Phosphorous is also related to Nitrogen as a viable substance essential to biotic systems and processes. Phosphorous unlike Nitrogen is not found in the atmosphere, but in the Earth's crust. However, phosphorous comprises approximately 1% of the human body as well as the same amount proportionately of the Earth's crust. Both Nitrogen and Phosphorous are in finite quantities on Earth but are replenished through a constant flux process involving the production of organic and inorganic forms.

In order to function and create proteins needed to survive nitrogen is needed. Even though it cannot be assimilated in its natural state, nitrogen and its different forms are all essential to life on Earth. When talking about nitrogen they’re different forms. Nitrogen in its natural state is a gas. Nitrates and Nitrites which are polyatomic ions consists of nitrogen and oxygen atoms. Ammonium is another polyatomic ion. While Ammonia is a molecular compound. But both ammonium and ammonia consist of nitrogen and hydrogen atoms instead. And in this PowerPoint, we will be going more in depth about each compound and their relevance in the ecosystem.

 Nitrite is absorbed into red blood cells and combines with hemoglobin (oxygen-carrying molecule) to form methemoglobin. Methemoglobin cannot transport oxygen in the body, ultimately causing the animal to suffocate and die. However nitrite can change into nitric oxide, dilate your blood vessels, and lower blood pressure. Nitrite proved to be toxic to plants, however a good concentration of nitrates in the soil are a primary source of nutrients which is essential for plant growth. Under normal conditions nitrates are converted to protein in the plant at about the same rates as they are absorbed into the root system.​ 

The nitrogen cycle refers to the movement of nitrogen within and between the atmosphere, biosphere, hydrosphere and geosphere. The nitrogen cycle matters because nitrogen is an essential nutrient for sustaining life on Earth. The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates through biotic ad abiotic components of Earth. Gianna Williams

Nitrogen is the natural element that's essential for reproduction and growth of biotic things . It is a core component of amino acids which are a building block for nucleic acids and proteins, which are also the building blocks of life/ genetic material​. Our main source of nitrogen is the atmosphere. ​ Most of the air we breathe is composed of nitrogen which takes up 78% of the air.

Nitrogen is a nonmetallic element belonging to Periodic Table Group 15. It is a colorless, flavorless, and odorless gas that makes up the majority of the atmosphere on Earth and is a component of all living things.

Plants get most of their nitrogen from the soil or water in which they live. Animals get the nitrogen they need by eating plants. Nitrogen enters soil on land or into ocean water when organisms die.  Nitrogen is important because it is a major component of chlorophyll, the compound that plants use to make sugars from water and carbon dioxide. It's a major component of the building blocks of the human body. Plants wither and die.  All animals need Nitrogen to grow, reproduce and survive. Nitrogen is converted into compounds that plants and animals can use.  Nitrogen is important to plants and animals  Plants and animals need Nitrogen because it is the major component of many vitamins and hormones. Nitrogen is required for the growth and development of plants and animals.  Too little nitrogen and plants cannot thrive, leading to low crop yields, but too much nitrogen can be toxic to plants.

The environmental impacts of nitrate pollution include ecological damage to our rivers, lakes and coasts; ​

Energy and carbon emissions is being used for drinking water treatment and long-term impacts for our groundwater. ​

These nitrites in the blood cause changes in hemoglobin, or the molecules that help move oxygen in the body.

Nitrogen is a nonmetallic element belonging to Periodic Table Group 15. It is a colorless, flavorless, and odorless gas that makes up the majority of the atmosphere on Earth and is a component of all living things.

Nitrite is absorbed into red blood cells and combines with hemoglobin (oxygen-carrying molecule) to form methemoglobin. Methemoglobin cannot transport oxygen in the body, ultimately causing the animal to suffocate and die. However nitrite can change into nitric oxide, dilate your blood vessels, and lower blood pressure.  Nitrite proved to be toxic to plants, however a good concentration of nitrates in the soil are a primary source of nutrients which is essential for plant growth. Under normal conditions nitrates are converted to protein in the plant at about the same rates as they are absorbed into the root system.

Nitrogen makes up 78% of our atmosphere. Symbiosis-interaction between two different organisms living in close physical association, typically to the advantage of both.Nitrogen is most likely to be found in plants and the atmosphere. While phosphorus is found in the lithosphere or Earth’s crust. Biochemical cycle: the movement of a chemical substance through living and non living speres Four key steps: Weathering, Absorption, Decomposition, sediments.