What happens once the Sun's energy reaches the Earth? Explain with the help of a diagram.

Energy from the sun consists of various wavelengths of light. Out of all the rays, only UV (ultraviolet rays) radiations fall on earth. The UV (ultraviolet) radiations from the sun reach the earth’s atmosphere which is heavily rich in oxygen. These high energy UV rays split molecular oxygen (O2) into free oxygen (O). Afterward, this free oxygen reacts with molecular oxygen; it forms ozone (O3). This ozone layer filters the UV rays and allows only some part of it to fall on earth.

These harmful UV radiations of the sun can cause skin cancer in human and can cause many health hazards like skin cancer, cataract, destruction of plants, etc.


Plants capture sun energy by chlorophyll pigment found on the leaves of the plants.


Then they prepare their food in the form of carbohydrates through the process of photosynthesis. Then when energy flows from one trophic level to another in a food chain and finally gets released into the atmosphere after the decomposition of the organisms carrying it.



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