The correct answer is that when a species is made up of different smaller groups, each of those smaller groups is known as a variety.
Because comets are darker colored so they need light to shine on them to be seen in the dark skies of space.
The lacrimal<span> glands secrete tears which act to lubricate and protect the cornea and eyeball from injury which may result from small particles such as dust. Tears are a watery fluid with an electrolyte content similar to that of plasma and contains: bactericidal enzymes known as lysozyme and lactoferrin.</span>
i said the same answer as that guy so thats just wrong of u