Which of these planets would be most able to support a colony of humans?

Planet A: 76% Nitrogen, 23% Oxygen, 1% Other

Explanation:

To support humans, the planet outside the solar system must have a similar composition of atmosphere with the Earth. It must have nitrogen and oxygen as the most abundant gases in the atmosphere, and small amounts of other gases.

a plastic spoon that has a temperature of 78° f is placed into a bowl of soup that has a temperature of 84° f. which of these correctly describes what will happen?

energy as heat moves from the soup to the spoon.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.