Wind is a direct result of this and also weather I think
For the 1st one I would say C as it says Cells are the smallest form of life, for the 2nd one I would say C because the others all have animal which doesn't have cell wall, 3rd is A
A : DNA in the nucleus of the egg controls all cell activities
The OLFACTORY AND THE GUSTATORY SYSTEMS have receptors which die out after sometimes because of direct exposure to the environment.
The olfactory system has to do with the perception of smell while the gustatory system has to do with taste stimuli. For these two basic sense organs, their perception rate is always highest when they are newly exposed to a stimuli, after continuous exposure to the stimuli their receptors die out.