Fossil a is found in a rock layer above a layer containing fossil b. which fossil is probably older? a) fossil a b) fossil b c) both are the same d) can't be determined

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit

The particles that are found in the nucleus of an atom are