A percolation tube is used to determine the percolation rate of a soil sample in mL/cm2/minute. To conduct the test, a certain volume of water is poured through the soil sample, and the time it takes for the water to pass through the sample is measured. Calculate the percolation rate using the following data. (Remember, area= pi•r^2). b. A percolation tube has a radius of 4.5 cm; 50 mm of water is poured onto the surface of the soil and it takes 10 seconds for the water to disappear from the surface of the soil.

"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."

i am sorry but i need more information and a picture.