Geography
Answer
The self-regulating and self-sustaining structural and functional unit of the biosphere is called an ecosystem. This system depends upon the sun for its energy.
For example, Ecosystem of a forest include plants and trees which are eaten by herbivores (deer, rabbit). These animals are eaten by carnivores (lion, tiger). When these animals perish, they are decomposed by decomposers and return to the environment. Again they are consumed by producers and so on.
Related Questions
Describe the role of distance from the sun in making earth a habitable planet.
How does each of the following prove the circular shape of the earth:
(i) Lunar Eclipse
(ii) Pole StarGive a geographical reason for each of the following:
(i) Earth is a habitable planet.
(ii) From space Earth looks blue.
(iii) Water bodies reduce the day-night temperature variations.Draw a well labelled diagram to show the cyclic circulation of water between the three realms of the earth.