Question

explain the importance of nitrogen and oxygen in the atmosphere​

Answer 1

Nitrogen (N) is one of the building blocks of life: it is essential for all plants and animals to survive. Nitrogen (N2) makes up almost 80% of our atmosphere, but it is an unreactive form that is not accessible to us.

Humans and most other species on earth require nitrogen in a “fixed,” reactive form. Reactive nitrogen is necessasry for the food production process. Until the discovery of the Haber-Bosch process in the early 1900s, we only had access to naturally occurring sources of reactive nitrogen (such as manure and guano) for food production. The Haber-Bosch process--an industrial process through which we can fix reactive nitrogen--has allowed food production to keep up with the growing human population, but at a cost to the environment.

Today, humans create over 2 times as much reactive nitrogen as nature. In contrast, human activity contributes just 5-10% of CO2  emissions. Much of this reactive nitrogen has accummulated in the environment, where it causes a series of negative impacts to human and ecossytem health. Major sources of this reactive nitrogen include agriculture and the burning of fossil fuels. This nitrogen pollution causes profound environmental impacts, including smog, acid rain, forest dieback, coastal ‘dead zones’, biodiversity loss, stratospheric ozone depletion and increased greenhouse gases. It also affects human health, including respiratory disease and an increased risk for birth defects.

oxygen helps in combustion and respiration in plants and animals

Answer 2

$Explanation$ :-

➝Nitrogen

• It is the most prevalent gas in the atmosphere.
• plants and animals need nitrogen for their growth but they cannot absorb it directly from the air bacteria present in the soil and roots of some plants absorb nitrogen from the air and change its form that plants can use it.
• atmospheric nitrogen is also used to manufacture chemical fertilizers

➝ Oxygen

• oxygen is the second most abundant gas in the atmosphere.
• human being and animals in take oxygen from the air in order to survive.
• green plants absorb carbon dioxide and release oxygen during the photosynthesis . In this way oxygen content in the air and remains constant this balance is disturbed when we cut trees.
• Ozone is a form of oxygen.