Sharks obtain all of their energy by eating other marine organisms, such as fish. suppose that a marine scientist measures the chemical energy found in a system consisting of a fish and a shark. after the shark consumes the fish, the marine scientist finds that the total energy in the system decreases. if true, would this result validate or invalidate the law of conservation of energy? why or why not?

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?