Correct answer
B. Both a and b
Explanation
The correct answer is Both a and b.
The difference between saturation vapour pressure and actual vapour pressure at a constant temperature is called ________?
Almost one third of the land area through out the world is affected by land degradation. Pakistan’s agriculture sector though facilitates employment to >65% but is facing challenges from:
The arrangement (disposition and number) of bristles or setae on the body and appendages – of particular importance in the classification of Diptera and mites:
A chemical which causes plant does it called ________?
Eating quality of the fruits is determined by________?
The control and preservation of natural resources For present and future use is________?