When a person rises quickly from a prone position,
a. the cardioaccelerator center in the medulla becomes less excited?

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

It takes a lot of energy to get the temperature of water to increase and eventually boil because water has a high heat.

What does every magnet possess? a. iron metal b. strong magnetic field c. repulsion d. north and south poles