Which of the following statements about tolerance range is true? a. Tolerance range is different for different organisms,
b. The tolerance range is the total number of organisms that can be supported by an ecosystem.
c. Tolerance range is affected by biotic factors in an ecosystem.
d. The available water supply does not impact an organism's tolerance range.

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?