The correct answer is: Eighteen times more ATP is formed during aerobic respiration than during anaerobic respiration.
Explanation:
During aerobic respiration 36 ATP are formed. In contrast, in anaerobic respiration (lactic and alcoholic fermentation) only 2 ATP, obtaining energy from pyruvate during glycolysis.
Explanation: Paracrine signaling occurs between cells that are relatively within a short distance apart. The signaling triggers quick responses and can last only for a short period of time because of the wearing-off of the paracrine ligands (neurotransmitters).
Cells that exhibit paracrine factors release them into the immediate extracellular environment.
Due to mixing of particles present in the upper layer of limestone with sandstone during deposition.
Explanation:
The parent layer was limestone layer which is older than sandstone layer. This sandstone layer spreads on the limestone layer because of wind. The wind moves these sandstone from other region and their deposition occurs on the limestone layer. During deposition of sandstone, some particles of limestone which are present at the surface mixes with the sandstone so that's why in sandstone layer, small and weathered pieces of limestone are present.
One definition of dry air is a theoretical sample of air that has no water vapor. Another definition of dry air is air that has a low relative humidity. When the relative humidity drops below about 40%, the air feels dry to the skin.