Humans live in the layer of the atmosphere referred to as the troposphere. (Most of the mass of the atmosphere can be found in the troposphere.)
Answer:Because they can't see
Explanation:Owls have tubular rather than round-shaped eyes, so they aren't able to move them around much. That's why they rotate their heads – so they can see. ... As it turns out, owls have uniquely constructed necks and an arterial system that feeds blood to the brain even while they are twisting their necks to rotate their heads.
The trachea serves both functions
<span>relative dating is determining whether an object or event is older or younger than the event.</span>
