Answer:
A major obstacle life would have to overcome is having only a limited amount of natural light and then the rest of the time is darkness.
An eye consisting of an array of numerous small visual units, as found in insects and crustaceans.
People who advertises items or things to put there ideas out there.
<span>D. Gravity is the force of attraction between two objects and is dependent upon the mass of the objects and the distance between the objects.</span>
They could discover which organisms are closely related to the mammoth, and which one is the most closely related.
