The nictitating membrane's function is to provide the eye with a special extra level of safety while the creature is still able to see.
I’m pretty sure it’s D, the others don’t make sense??
The answer would be no, because if evolution did occur in this situation, then habitats could just as well change, and evolution helps organisms to adapt to change.
<span>Specific gravity is the mass or density of a substance expressed as a ratio of the same volume of that substance in a standard reference substance. For solids, the reference substance is usually water. For example, if solid substance Z has a specific density of 1.5, that means that solid substance Z weighs 1.5 times as much as the standard substance (water).</span>
