Correct answer
B. Both (a) & (b)
Explanation
The correct answer is Both (a) & (b).
The modes of Perennation are:
Biotic components of an ecosystem include:
The term homeostasis in an ecosystem refers to:
A minima rotation worth the name is specified which corresponds to the age at which the trees reach the exploitable size which is usually 120 years, but is 150 years for the deodar, fir and kail in the moist zone of Kaghan 200 years for the ry zone of ________
Ecological aspects is / are:
The ultraviolet radiations are able to peretreate in a sea as deep as: