A nuclear reactor starts to over-heat. Which of the following will help slow the reaction and reduce the reactors temperature? A: raise the control rods out of the reactor.
B: lower the control rods into the reactor.
C: take coolant out of reactor.
D: increase the pressure within the reactor.

An easy way to calculate the amount of energy available at each level is to what?

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community