What are two important differences in the structures of DNA and RNA? A. The sugar of RNA is ribose, rather than DNA's deoxyribose. The base uracil substitutes for DNA's thymine.
B. The sugar of RNA is deoxyribose, rather than DNA's ribose. The base thymine substitutes for DNA's uracil.
C. DNA always has a single strand, while RNA always has a double strand.
D. RNA always has a single strand, while RNA always has a double strand.

when atmosphere interacts with biosphere they focuses on on the sources and sinks of green house gases (ghgs) air pollutants, particular matters, water and energy between the earth's surface and the atmosphere. the biosphere affects the climate. the atmosphere and biosphere are in constant interaction with each other, and all living things rely on gases in the atmosphere for life. organisms such as animals take in oxygen gas form the atmosphere to use in every cell of their body for smooth functioning of daily routine exercises.

answerambulatory;

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.