Hemiacetals are a. there is more than one correct answer choice listed here. b. semiacetals produced by alcohol subtraction from a ketone c. partial acetals that can be converted by a reduction reaction d. unstable compounds that convert to acetals in the presence of an alcohol and an acid

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.