AP BIOLOGY

Detailed explanation-1: -Since-183 degrees Celsius is the boiling point of oxygen, it boils, meaning that it turns into a gas from a liquid . The process is the same as water boiling at 100 degrees Celsius, where a large amount of gas evolves (comes off) from the liquid.

Detailed explanation-2: -Liquid oxygen is a cryogenic liquid. Cryogenic liquids are liquefied gases that have a normal boiling point below –130°F (–90°C). Liquid oxygen has a boiling point of –297°F (–183°C).

Detailed explanation-3: -Nitrogen is more in the air because it is least reactive and nitrogen is generated and maintained in this natural equilibrium by plants and surface soil bacteria, who convert it to ammonium, nitrites, and nitrates before releasing it as free nitrogen back into the atmosphere.

Detailed explanation-4: -At room temperature, oxygen is in a gaseous state of matter. This means that room temperature, which is between 68 and 72 degrees Fahrenheit, is above the boiling point of oxygen.