Answer:
The fish did not yet exist when the old layers of rocks were deposited. In fact, animals with hard parts did not evolve until about 600 million years ago, which is only about 13% of the 4.5 billion year age of the Earth. Multicellular animals without hard parts left tracks in older sediments, but had no fossilize-able body parts.
Explanation:
A simple <em><u>refracting</u></em> telescope uses two convex lenses to gather and focus light from a distant object.
Answer:
its gives us oxygen witch most thing take to stay alive
