The deer population will decrease
Lipid - <span>any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. They include many natural oils, waxes, and steroids.
Its plays the role of storing energy or forming cell membranes alone.</span>
I'm not sure about the first two but I think the one about the halite crystal is cubic. :)