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.
Despite more sales of pickups and SUVs, gas mileage of new vehicles climbed last month for the first time since August, the University of Michigan Transportation Research Institute reports. The average gas mileage of all cars and trucks sold in the U.S. in January was 25.4 miles per gallon. While that was up from 25.1 mpg in December, it was down from August's all-time high of 25.8 mpg. As gas prices have slid, more people have been buying larger, more fuel-thirsty vehicles.