Correct answer
D. Both (a) & (b)
Explanation
The correct answer is Both (a) & (b).
The desert range areas are generally ploughed with a disc, followed by a cultivator, the general characteristics of an ideal seedbed are:
Symbiotic association in which both the partners get benefit and neither cansurvive without the other is called:
In natural ecosystem, decomposers include:
Percentage of water left in the soil when a plant wilts is known as:
The soil erosion on slopes proceeds in the following manner:
Which one of the following is not a matching pair of certain organism/s and the kind of association?