If a rock layer is found which contains thousands of fossil fish:
A. the fossils piled up as each fish died one at a time
B. the rock layer could have taken thousands of years to form
C. all the fish had to be quickly buried together

How would doubling the made of an object change the objects potential energy

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.