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FrozenT [24]
3 years ago
14

Which below is not a way in which a contrail may form?

Biology
1 answer:
user100 [1]3 years ago
3 0
<span>The answer is  Due to heating of the air by the engine exhaust. Contrails are formed when the hot exhaust of the plane engines is rapidly cooled by the cold air in the upper atmosphere. The water vapor in the engine exhaust, formed in the combustion of fuel, freezes immediately to ice crystals due to the low pressure and -36oC  temperatures in the 8000 m altitude in which the planes cruise. </span>




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Maintaining osmolarity is important to the body because the membranes of most cell types are freely permeable to ____.
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Answer: Water

Explanation:

Though Cell membranes are selectively permeable to solute, cell membranes are permeable to water.

An osmotic pressure is exerted on cells when the osmolarity of their external environmental is more greater than their internal environmental.

When an osmotic pressure is exerted on cells for the cells to survive, water molecules move from the region of lower concentration to a region of higher concentration until there’s a balance in osmolarity.

Cell membranes are freely permeable to water.

Answer is water.

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Answer:

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Explanation:

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