<h2>Answer</h2>
Fossils are often found in <u>Sedimentary</u><u> </u><u>rocks</u> because it is formed from the remains of once living things.
<h3>#CarryOnLearning</h3>

Those states would be Wyoming, Colorado, Utah, New Mexico, California, Arizona, And Nevada
The Upper Basin States being Wyoming Colorado Utah and New Mexico
The Lower basin states being Cali Az and Nevada
Answer:
maybe its are technology??
Answer:asteroids and comets
Explanation: