Which of the following is used as "Biofertilizer"?
Answer : A. Rhizobium
Consider the following statements:
I.Acid rain is natural and also due to man made causes
II. Acid rain has global ecological problem
III. Acid rain increase the acidity of soil
IV. Acid Rain affect plants and animals
of these statements
Answer : D. All are correct
Identify the sequence of energy flow in a terrestrial eco system?
Answer : B. Grass-> Grasshoper->frog->Snake->Owl
Acid rain results from
Answer : C. Air pollution
An ecosystem consists of
Answer : A. A living community and its environment