Answer:
In physics we call it power
On a hot dry day, the amount of water vapour present in atmosphere is less. Thus, water present inside the desert cooler evaporates more, thereby cooling the surroundings more. Hence, a desert cooler cools better on a hot dry day.
The answer is D.
Conduction is the transfer of thermal energy by means of <em>direct contact</em>. Particles that are warmer have more energy so the move faster. When these warm particles touch cold particles, they collide with them and transfer energy to them and they continue to pass it on to the other particles next to them.
Math is the process of using the given information, along with
all the general stuff that you know, to find the missing information.
With no given information, we have no way to even guess at
an answer.