Answer:
An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow. A fluorescent lamp converts electrical energy into useful light much more efficiently than incandescent lamps.
Answer:
Genetic variation is a measure of the genetic differences that exist within a population. The genetic variation of an entire species is often called genetic diversity. Genetic variations are the differences in DNA segments or genes between individuals and each variation of a gene is called an allele.
Explanation:
I believe that 2 is correct. :)
D., it increases the biodiversity of the species
A species must have an appropriate food source, not have too many predators feeding on them, and have a suitable climate for which the species is adapted to.