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For human beings breathable air consists of a ratio of oxygen to some inert gas (on earth it is nitrogen). The typical concentration is about 1/5th oxygen and 3/4 nitrogen.
Where does oxygen come from? Oxygen readily combines with so many different elements. Hydrogen + oxygen makes water. Carbon plus oxygen makes carbon dioxide. Iron plus oxygen makes rust. Silicon combines with oxygen to make sand. So free atmospheric oxygen is an oddity. Why do we have such an abundance of it?
This question brings us to lakes. More particularly, oceans. Earth's early oceans teemed with single celled organisms that absorbed carbon dioxide from the atmosphere or that was dissolved in sea water, and using sunlight broke that molecule apart, releasing the oxygen. After eons these photosynthetic creatures tore apart most of the atmospheric CO2, rendering it into carbon, which they absorbed and used, and releasing the oxygen.
After several billion years photosynthetic plants evolved, first in the oceans, and then migrating into the terrestrial sphere (land). But even today most new oxygen come from marine cyanobacteria, mostly in the ocean, but also in lakes and rivers, and to some extent pine needles, leaves on trees and bushes, blades of grass, and ferns.
Wiki User
∙ 10y ago
Breathable air is air that contains enough oxygen for humans to breathe comfortably. Lakes play a vital role in producing breathable air through a process called photosynthesis, where aquatic plants in the lake absorb carbon dioxide and release oxygen. This oxygen then gets transferred into the surrounding air, contributing to the overall air quality.
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What is the density of nitrogen compared to breathable air?
The density of nitrogen is 1.25 times higher than the density of breathable air because nitrogen makes up about 78% of the Earth's atmosphere.
What 3 types of evidence should be in breathable containers?
DNA samples, plant specimens, and insect specimens should be stored in breathable containers to prevent the growth of mold and maintain proper air circulation to preserve the integrity of the evidence.
Why do you say nitrogen is a diluent of air?
Nitrogen is considered a diluent in air because it makes up about 78% of the atmosphere but does not take part in the chemical reactions that occur during respiration. It acts to dilute the oxygen in the air, making it more breathable and reducing the risk of oxygen toxicity.
Are molecules in the air part of the hydrosphere?
No, molecules in the air are not part of the hydrosphere. The hydrosphere refers to all the water on Earth - this includes oceans, lakes, rivers, and groundwater. Molecules in the air are part of the atmosphere, which is a separate component of the Earth's systems.
What is a substance that allows water and air to pass through?
A substance that allows water and air to pass through is called a permeable material. This type of material has spaces or pores that facilitate the flow of water and air through it, making it suitable for applications like drainage systems, filtration, and breathable fabrics. Examples of permeable materials include sand, gravel, and certain types of membranes.
Is venus air breathable?
what! no the only breathable air for humans is on Earth.
What makes the air clear?
It is breathable
Do both the sun and the earth have breathable air?
No. Earth has breathable air (obviously) but the sun does not. It is made mostly of hydrogen and helium and is far too hot.
Does Pluto have breathable air?
No, Pluto lacks a developed atmosphere, and breathable air, and cannot sustain life. Part of the air that we breath would condense on Pluto anyway, since it is so cold.
Is the air in Jupiter is breathable?
no i dont think so.
Is there breathable air or drinkable water on Mars for humans?
no on air not much on water
Is the air on the sun breathable?
There is no air on the sun. It is a giant ball of burning gases.
What is an example sentence with the word breathable?
I prefer to wear breathable fabrics like cotton when exercising, as they allow my skin to stay cool and comfortable.
Do trees give you air?
Trees contribute oxygen to the air, so the air becomes more breathable.
What do humas need to swruvie is space?
breathable air with oxygen.
How much breathable air is on Venus?
The atmosphere of Venus is not breathable by any life form that we know of. Our probes survive less than a minute on the surface.
How much breathable air is on Venus' surface?
The atmosphere of Venus is not breathable by any life form that we know of. Our probes survive less than a minute on the surface.
