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What do dust smoke salt and chemicals have in common?

A. They are gases in air. They make up water vapor in air. …

What are the gases in the air?

Air is mostly gas The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

Which are the three most common gases in Earth’s atmosphere?

Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%. Gases like carbon dioxide, nitrous oxides, methane, and ozone are trace gases that account for about a tenth of one percent of the atmosphere.

What are the 3 gases in air?

The dry composition of the atmosphere is mostly nitrogen and oxygen. It also contains fractional amounts of argon and carbon dioxide and trace amounts of other gases, such as helium, neon, methane, krypton, and hydrogen (NASA).

What important gas do we take in when we breathe gizmo answers?

What important gas do we take in when we breathe? Oxygen 2. Why don’t we run out of the important gases that we need to stay alive? They are always in the air.

What important gas do we take when we breathe?

The air we breathe: three vital respiratory gases and the red blood cell: oxygen, nitric oxide, and carbon dioxide.

What gas do plants give off in the dark?

During daylight hours, plants take in carbon dioxide and release oxygen through photosynthesis, and at night only about half that carbon is then released through respiration.

What gas do we take in when we breathe?


Which two gases do you exhale more than you inhale?

We breathe in oxygen and some of this carbon dioxide. When we exhale, we breathe out less oxygen but more carbon dioxide than we inhale.

Which is the common passage for both food and air?

Air, food and liquid all pass through this common passage, the oropharynx. The two passages separate again here, in the hypopharynx. Food and liquid pass backward into the esophagus on their way to the stomach. Air passes forward through the larynx and into the trachea, on its way to the lungs.

What is the substance that moves from the air to the bloodstream via the lungs?


How much air do we breathe?

The average adult, when resting, inhales and exhales about 7 or 8 liters of air per minute. That totals about 11,000 liters of air per day. Inhaled air is about 20-percent oxygen. Exhaled air is about 15-percent oxygen.