What is the total number of elements in group 17 that are gases at room temperature and standard pressure?

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

What type of competition exsist between two species. turtles and fish

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?