DNA molecules are composed of repeating subunits called nucleotides. A nucleotide is made of three parts: a nucleobase, a certain type of sugar (deoxyribose in the case of DNA â¦ nucleotides), and one or more phosphate groups.There are four different nucleobases found in DNA: adenine, cytosine, guanine, and thymine.NA molecules are composed of repeating subunits called nucleotides. A nucleotide is made of three parts: a nucleobase, a certain type of sugar (deoxyribose in the case of DNA â¦ nucleotides), and one or more phosphate groups. There are four different nucleobases found in DNA: adenine, cytosine, guanine, and thymine.
According to multiple studies, the Hummer H2 has an average mileage between 9 and 15 miles per gallon. Due to the potential repercussions of such extremely low gas mileage on the environment, the Hummer brand has long been a popular target for environmentalists.
There's not a lot of data to work with, but most experts think the average lifespan of a hummer is 3 or 4 years. The record was a female Broad-tailed, banded as an adult in Colorado in 1976, then recaptured in the same location in 1987, which would have made her at least 12 years old.