Air masses move from areas with high pressure (such as the poles of the earth) to areas with low pressure (the equator). the temperature and moisture of an air mass depend on where it is formed.

a continental tropical air mass is and
a.
cold, dry
b.
warm, dry
c.
warm, moist
d.
cold, moist

B

Explanation:

Warm because land gains heat faster than water when heated by the sun. The heated land then transfers the heat to the atmosphere. The air mass is dry becasue a continent is mainly land and very little water (unlike oceans). There is, therefore, very little moisture in the continental tropical air mass.

The answer is A.

The words polar and tropical indicate whether the air mass is cold or hot. The word maritime tells that the mass was formed over the water and will be moist, while the word continental tells that the mass was formed over land and will be dry. so that case its cold a dry.

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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."