Question

What are two essential elements that affect
life ?​

Answer 1

Answer:

Scientists believe that about 25 of the known elements are essential to life. Just four of these – carbon (C), oxygen (O), hydrogen (H) and nitrogen (N) – make up about 96% of the human body.

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Answer 2

Carbon and oxygen are the two essential elements that affect life.

Carbon

• Mostly found in the form of carbon dioxide in the atmosphere. It is classified as a greenhouse gas that traps the energy of the sun on earth and thereby maintains the temperature.

• Also carbon dioxide is required for plants to perform photosynthesis( making their own food), and all living creatures on earth depend directly or indirectly on plants.

• The carbon cycle in our environment is important as it maintains a balance and thereby supports life on earth.

Oxygen

• Oxygen supports life on earth as humans and animals take in oxygen and give out carbon dioxide.

• Oxygen is required for every cell in our body and helps in carrying out cellular respiration in organisms, thereby leading to the formation of the energy currency of the cell, Adenosine Triphosphate( ATP).

• Plants give out oxygen as a by-product of photosynthesis and thereby maintains a balance.