How do cells maintain a unique internal environment through the transportation of materials? You can just find a good article about this and put it as an answer or you can just answer the question just pick.

Air pollution is only caused by human activity, select the best answer from the choices provided ot of true or false

The energy available as a result of the motion of a body is called energy. -potential -gravitational -kinetic -chemical

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?