Please answer

Asked by Abhijeetoo7 | 28th Feb, 2010, 01:25: AM

Expert Answer:

  1. Ecosystems ensure the flow of energy through its components. Solar energy is converted by the photosynthetic producers (plants) into chemical energy in the form of plant carbohydrates. Herbivores consume the plant carbohydrates and so this chemical energy is transferred to them. Carnivores consume herbivores. So the energy is circulated further to the next trophic level. In these animals, this chemical energy is converted mostly into mechanical energy (work done) and heat.
  2. With the help of decomposers, all the organic materials in the bodies of the consumers are eventually broken down into inorganic materials. These are then rebuilt into organic compounds by the synthetic activities of the consumers. Thus, matter circulates in nature. Though it may constantly change it's form, there is no overall loss or gain. The major nutrient element i.e. carbon, hydrogen, oxygen and nitrogen, which form about 95% mass of the living organism, are circulated again and again between living and non-living components of the ecosystem.
  3. In addition healthy ecosystems keep our air and water clean.
  4. Ecosystems also regulate atmospheric chemical composition, global temperature, precipitation and other climatic processes, and hydrological flows.
  5. Storage and retention of water, control of soil erosion and sediment retention are other important functions.
  6. It also regulates population and acts as a source of unique biological materials and  products. They provide us with sources of food, shelter, clothing and medicine.
  7. Also provides opportunities for recreational and cultural activities.

Answered by  | 1st Mar, 2010, 07:11: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.