Geologists use the radioactive element to determine age of remains of organisms, such as bone and wood. -OPTIONS-
carbon-14
potasiom-40
uranium
lead

What is turgor pressure, what causes it, and what does it do for a plant?

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?

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million