4. Earth's Energy Budget describes the in- and out-flow of heat energy from the Sun to Earth's surface. Which of the following options best describes how
greenhouse gases influence this budget?
A. Earth surfaces absorb incoming heat energy and re-emit it back to gases
in the atmosphere.
B. Some incoming heat energy gets scattered and reflected back to space by
clouds and particles in the air, including gases.
C. Re-emitted heat energy from Earth's surface is absorbed by gases in the
atmosphere and then re-emitted in all directions.
D. Gases in Earth's atmosphere dissolve in oceans, and absorb the heat
energy from the Sun that the oceans receive.

You decide that the introduction should also discuss the extremophiles that are referred to as the archaea. these single-cell organisms are considered "extremophiles" due to their ability to survive and reproduce in environmental conditions that would be hostile for most living organisms. archaea species have been isolated from highly acidic sulfur springs, ocean floor thermal vents with temperatures that exceed boiling, and subarctic ice well below freezing. while still considered to be prokaryotic, the archaea have numerous differences that place them apart from the bacteria. choose the characteristics that separate the archaea from other prokaryotic cells. select all that apply. view available hint(s) select all that apply. archaea lack true peptidoglycan in their cell walls. the morphology of the cell is rigid and is geometric in shape, similar to a sphere or cylinder. the cytoplasmic membrane lipids of archaea have branched or ringform hydrocarbon chains. all currently identified and characterized archaea have been linked as the causative agent to an animal or human disease.