Suppose sodium chloride mixes with silica (a hard glassy material that does not dissolve in water) describe a way to remove the sodium chloride

A solid and a liquid mixture is describe here. The best method to separate the solid from the solution is by filtration. Filtration is a unit operation where it involves the separation of solids from the liquid. The size of the pore of the filter and the solids are an important thing to consider here.

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101