Freshwater can be renewed, but environmentalists consider it nonrenewable. why is there a contradiction in classification?
a.)water is recycled through the use of irrigation, bathing, and everyday use.
b.)water is easily polluted or depleted before it can be replaced.
c.)water evaporates and condenses, and then precipitation returns it to the lakes.
d.)water is highly affected by global warming, and is quickly evaporating.

"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."

human-caused climate hope this