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Give definition of following:

1. Pyramid

2. Biofuels

3. Pyramid of number

4.Pyramid of biomass

5.DDT  

1 Answer

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Best answer
  1. Pyramid: A large stone building with four triangular walls that slope into a point at the top, especially in Egypt.
  2. Biofuels: When biomass is used for energy production, it is known as biofuels. Fuel made from plant or animal sources.
  3. Pyramid of number: A graphical representation designed to show the number of organisms at each tropic level in a given ecosystem.
  4. Pyramid of biomass: A graphical representation designed to show the quantity of energy present at each tropic level in a given ecosystem. 
  5. DDT: “Dichloro Diphenyl Trichloro Ethane” is a chemical used to kill insects that harm crops.

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