Answer the following questions.
(i) What is an ecosystem?
(ii) What do you mean by natural environment?
(iii) Which are the major components of environment?
(iv) Give four examples of human-made environment.
(v) What is lithosphere?
(vi) Which are the two major components of biotic environment?
(vii) What is biosphere?
Explain the interaction within biotic components of environment and energy flow