How is a HIV infection different from a cold virus infection? a: HIV is killed by Macrophages
b: HIV is a bacteria
c: HIV is a lipase
d: HIV attacks helped T-cells

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

b is dominant over the allele for the white fur.

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.