Which statement is not true of ozone? it forms a layer in the upper atmosphere. it produces ultraviolet radiation. it is a form of oxygen. it is an ingredient in smog.

The correct answer is B. It produces ultraviolet radiation.

Explanation:

Ozone (O3) is a molecule formed by three atoms of oxygen that forms a gas. Additionally, this gas forms a layer in the atmosphere known as the ozone layer that plays an important role because it absorbs almost all ultraviolet radiation from the sun. Indeed, the ozone layer and therefore ozone molecules can absorb around 98% of the UV radiation from the sun. This is also the reason why the destruction of ozone has important effects on Earth. This means the statement that is not true of ozone is "it produces ultraviolet radiation" because ozone absorbs this radiation instead of producing it.

"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."