Acompound microscope can

a .magnify an object up to 10 times and uses two lenses. b magnifying object up to nine times and uses more than one lens. c magnify and object up to 400 times and use more than one lens. d. magnify and object up to 200 times and use one lens

the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying

"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."