Ans.
Nitrogen fertilizers are commonly used by farmers to increase crop production. Ammonium is the main component of nitrogen fertilizer, as it is easily assimilated by plants and provides nitrogen to them, while nitrate gets easily lost from the soil. During nitrogen cycle, ammonium is converted into nitrate by nitrification. So, nitrification inhibitors are used with to slow down the conversion of ammonium to nitrate to provide nitrogen for longer time.
Thus, 'to increase crop production, nitrification step of nitrogen cycle is preferred by farmers to block, or slow down.'
Answer:
Gliding
Explanation:
Gliding movements are one of the four major types of movements allowed by synovial joints. Gliding movement of synovial joints includes side to side and back and forth movements only. Gliding is a simple movement and moves the nearly flat bone surfaces back-and-forth and from side-to-side with respect to one another.
Since the angle between the bones mostly remain the same and there is no rotation, gliding movements do not involve the movement of the joint around an axis. Gliding movement exhibits limited range as exemplified by movement between flat articular processes of vertebrae.
Assimilatory powers means the capable of taking (gas, light, or liquids) into a solution and having the power or capacity or tendency to absorb or soak up something.

The main reason causing average global temperature rise is increase in amount of green house gases like Carbodioxide, and since deforestation reduces a vast number of plants, so there is lack of plants absorbing CO2 causing this whole thing.
So, according to this the Correct choice is B