I am researching the sources and life cycle of the sources of the major atmospheric gases. My intention is to focus on the source of the gas, the percentage of atmospheric space it occupies,how is the gas revived and introduced into the atmosphere.
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One of the major gases is inert-Argon, and doesnt really seem to cycle-it makes up about 1%.  The primary gas is nitrogen, a small amount of which is fixed in the roots of plants (or by symbiotic organisms in those roots) and lifeforms such as blue-green algae-it makes up about 78%.  The greatest cycling gas is oxygen, which makes up about 21%.  Free oxygen, as found in our atmosphere, is extremely rare and likely would not be found in the absence of life-Oxygen in very reactive-many elements and compounds readily oxidize, such as iron turning to rust.  On Earth, plants take in carbon dioxide and split it, using the carbon to build things such as carbohydrates- the oxygen is releases, and used by aerobic lifeforms for respiration.  The level of carbon dioxide is about 0.1%- This is also very unusual, since in other planets with an atmosphere, carbon dioxide is a major gas...again, low CO2 is probably a sign of life.  The CO2 is low because the plants use it-it is returnd to the atmosphere by respiration.
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Carbon, Oxygen, Nitrogen Cycles are biogeochemical cycles.\nRefer the following:\nhttp://en.wikipedia.org/wiki/Nitrogen_cycle\nhttp://en.wikipedia.org/wiki/Oxygen_cycle\nhttp://en.wikipedia.org/wiki/Carbon_cycle
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Ultraviolet radiation exposure, photosynthesis and the gaseous composition of elements in the atmosphere.
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Photosynthesis, Respiration, Acid Rain, Carbon Cycle, Nitrogen Cycle, Ozone, Methanol, Carbonic Acid...\n\nThe sources listed are very good, some may be over your head, but, look them over.
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From so many chemical reactions you couldn't list them all here but if you mean in the context of the global warming issue we need only look at systems that release carbon that would otherwise be locked away into the environment.  The big two sources are the much talked about burning of fossil fuels.  The carbon of coal and oil are burned to form mostly CO2.  Another big source that I don't hear much about is the carbon in limestone (calcium carbonate).  We heat this up to realize a lot of CO2 to make concrete.  A lot of CO2 is released in this process.  From the limestone and from the fossil fuel used to cook it.
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Percent composition of\ndry atmosphere, by volume ppmv: parts per million by volume \nGas Volume \nNitrogen (N2) 78.084% \nOxygen (O2) 20.946% \nArgon (Ar) 0.9340% \nCarbon dioxide (CO2) 365 ppmv \nNeon (Ne) 18.18 ppmv \nHelium (He) 5.24 ppmv \nMethane (CH4) 1.745 ppmv \nKrypton (Kr) 1.14 ppmv \nHydrogen (H2) 0.55 ppmv \nNot included in above dry atmosphere: \nWater vapor (highly variable) typically 1% \n\nThis is from Wikipedia See link below:
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If you want me to use those specific terms it sounds like you're going to just copy what I write for your assignment.  I'd be happy to explain the process to you, by I'm not going to write your homework paper.\n\nThe idea is that plants produce food using energy from the sun, and all other life either directly eats plants or eats things that eat plants.  So all life (except some protists, that, like plants, can make their own food) lives on energy that the plants have harvested from the sun.\n\nI hope you already know what the laws of thermodynamics, photosynthesis, and respiration are.  If not, pay more attention in class or look them up on Wikipedia.  You should be able to figure out how to phrase the explaination in a way that uses those terms on your own.
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Well, actually, the atmosphere is currently about 80% nitrogen and 20% oxygen.  \n\nThere's nothing the human race could do, such as releasing balloons, that would convert the atmosphere to helium.  It's just to big!\n\nHelium has little effect on organic life, because helium is inert -- it doesn't react with anything!
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oxygen and carbon dioxide
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there is water ..\n\nthere is some bacteria life ... \n\nmost planet look almost the earth ...\n\nhave  nitrogen  and  hydrogen and littel oxygen\n\ngood luck to ur project
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The answer, interestingly enough, is not zero.    ( In the following 3 E 5 means 3 times ten to the fifth...   3 followed by five zeros. )  \n\nOxygen and carbon in the air get cycled in and out of plants and animals, burned in fires, etc etc.  But in general the Nitrogen just hangs around. \n\nThere's been plenty of time since cesear for perfect mixing, so we can ignore that....  \n\nNitrogen is 80% of the air...  but for the purposes of this discussion, let's ignore that too.... \n\na breath is between 1 and 2 liters, but let's go with 1 since it simplifies the math. \n\nWe can pretend for the purposes of discussion that the air is about 5 kilometers thick...  or would be if it was all at one pressure. \n\nand the surface area of the world is   5 E 8 square kilometers. \n\nso, we have 2.5 E 9 cubic kilometers of air, or 2.5 e 15 cubic meters, or 2.5 E 18 liters of air around the earth. \n\nSo, each of our breaths uses 4 E -19 of the earths air.  \n\nNow, go back to that last breath of cesear's.  \n\nRemembering the definition of a mole, 22.4 liters of air contain 6.023 E 23 molecules of the stuff air is made of.    So, one liter contains 2 E 22 molecules of air-stuff \n\n2 E 22 times 4 E -19  gives 8000  (8E3)  -- and most of that diatomic.  Throw away 20% (the carbon and the oxygen and you get 6000 nitrogen molecules, or 12000 atoms \n\nor there abouts.  \n\nThis is a classic "fermi question" -- useful for developing estimating skills
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I'm also doing an environmental project (school). I found lots of interesting stuff by asking the people around here. Try that but don't say it's your homework or something.
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Your question is ambiguous because air is a mixture of gases including carbon dioxide. Earth's atmosphere, "air", contains roughly 78% nitrogen and 21% oxygen and 0.93% argon, trace amounts of other gases, and water vapor.\n\nIf you wished to remove carbon dioxide from air, you could use what is called a "scrubber". Famous use of this device was in the movie "Apollo 13". \n\nMaybe you could rephrase your question if this answer does not help you...
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What we call air is just a collection of gases, or molecules in some gaseous state, possibly with some suspended particles like dust or clouds (water droplets condensed on the particles). \n\nThese gases sometimes react with other materials, as in fires. They go through phase changes, as when water evaporates to form water vapor. Carbon dioxide and other gases are so-called greenhouse gases because they do not allow all the infrared rays from the earth to escape into space, and they keep the earth warmer than it would be otherwise. Nitrogen scatters some of the wavelengths of light to create blue skies. Some of these gases become dissolved in other materials, like the ocean. The atmosphere and its properties are responsible for the phenomenon we call weather. One could make a very extensive list if one wanted.
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[edit] Atmospheric convection\nIn the case of Earth's atmosphere, solar radiation heats the Earth's surface, and this heat is then transferred to the air by convection. When a layer of air receives enough heat from the Earth's surface, it expands, becomes less dense and is pushed upward by buoyancy. Colder, heavier air sinks under it and is then warmed, expands, and rises. The warm rising air cools as it reaches the higher, cooler regions of the atmosphere and becomes denser. Since it cannot sink through the rising air beneath it, it moves laterally and then begins to sink. When it reaches the surface again it is heated, and is drawn back into the original rising column.\nSo the answer is D
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At room temperature and pressure one mole (6 x 10^23 particles/atoms/molecules) of a gas fills 24 dm^3 (Litres).\n\nThis means that in every cubic centimeter (one millilitre) of air there are 2.5 x 10^19 molecules.\n\nIf we forget about the rapid movement and think how many static molecules this means in each dimension we find that each 1-dimensional 1-cm long line contains 2,924,017 molecules (let's say 3 million to keep things simpler).\n\nOver 70% of air is Nitrogen and the length of an N2 molecule is about (keeping things simple) 100 pm (picometers; 10^-12 m) so 3 million molecules take up 300 million picometers or 300 micrometers (following conversion)\n\nThere are 10,000 micrometers in a centimeter so the molecules only 3% of the available distance.\n\nIf all 3 million molecules were equally spaced they would be approximately 3.3 nm (nanometers; 10^-9 m) apart.\n\nA division of the molecular length (100 pm) by the separation (3.3 nm) shows that they are about 33 molecules length apart.\n\nNow I've made plenty of assumptions here. I'm more than happy for people to point out where I've gone wrong (if I have). Please PM me.
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In the context of your question,\n\nA resource is a source of material or energy that may be consumed, changed, or dispersed to the point it is no longer easily usable. Examples would be copper ore, oxygen in the atmosphere, helium gas taken from oil wells, water, sand, or even soil. Anything we do consumes or utilizes some sort of resource. Breathing uses oxygen from the air. Copper is used for wiring and piping. Helium is used for scientific research and birthday balloons. Sand is used to make concrete. Water is used for drinking, irrigation, and generating hydroelectric power. Soil is used for growing crops.  None of these are exhaustive lists, just examples. \n\nOil: Oil is a mixture of organic compounds extracted from the earth by drilling. It is created from organic materials deposited in sedimentary rock that are altered by heat, pressure, and biotic processes to create it. \nOil is used to make gasoline, diesel, airplane fuel, plastic, shampoo, rubber, antihistamines, and many other products. \n\nNatural gas: It is an organic gas that is also extracted from the earth by drilling. It is generated by a similar process to that for oil generation. It is used to heat homes, make fertilizer, and some plastics. \n\nWater: Water is found in many forms, but mostly as either fresh or saltwater. Fresh water is used for drinking, irrigation, etc. Saltwater is not as useful directly to man, but is an essential part of our environment as the oceans both support food supplies and have a large effect on the climate. \n\nWood: Wood comes from living organisms- trees. Wood can be used for building many things, including houses. It is used for fuel and is the primary source of fuel in some parts of the world.