Roman says that the risk of osteoporosis can be reduced by making certain lifestyle choices. Which lifestyle choice could Roman be referring to?
a. increasing social interaction opportunities
b. lowering salt intake
c. managing stressful situations
d. increasing calcium intake

D. increasing calcium intake

Explanation:

Osteoporosis is caused from weak bones. Calcium plays a large role in supporting bone density, and can be taken as a dietary supplement *lifestyle choice* to prevent the risk of Osteoporosis.

D

Explanation:

surface modification is a versatile tool and has been widely used in material science and engineering that has significantly facilitated the study and characterization of complex materials. at  matexcel, experienced experts in surface science can offer tailored efforts to meet the specific needs from our clients.

"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."