16. The lateral-line of a shark is used for
A. Detecting and locating objects and moving animals in the water
B. Excretion of urea and water
C. Detecting odors
D. Secreting mucus as a swimming lubricant

9. wind power creates pollution. water air soil noise

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

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?