5. a marble or small sphere, made of stone, is found to have a mass of 3.05 grams. to find its volume, it is placed in a graduated cylinder that originally contains 10.00 ml of water. when the marble is placed in the graduated cylinder, the new volume of the water and marble together is 11.20 ml. 5a. calculate the volume of the marble (be sure to include units). (3pts) 5b. calculate the density of the marble (be sure to include units). (2pts)

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

a- all cells come from pre-existing cells