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The atmosphere we breath is actually mostly nitrogen (70% roughly). The 22% of oxygen in the air is used by our body to give the blood cells oxyen which is transported to the parts of the body that use it to make energy by combusting glucose with it. The byproduct, carbon dioxide, is expelled through the lungs. Therefore, the portions of what gases we inhale and exhale are different.
false i keep seeing this answer all over the place with people saying that 78% of the air we breath is oxygen when actually its nitrogen which is 78% and 21% oxygen 1% argon 0.04%(it changes due to humidity) water vapour. no matter what anyone tells you unless its a scientist its 78% nitrogen.
ps: i know this because i just had a science lesson and every textbook and teacher at my high school told me the same.
age 13
yes...sorry, but no, the earth is not mostly made up of oxygen, it is mostly made up of nitrogen, in fact, 78% of the earth's atmosphere is made up of nitrogen
No, Earth's atmosphere is mostly nitrogen, with around 21% oxygen and hydrogen making up much less than 1%.
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Did cyanobacteria change the young Earth's atmosphere by producing carbon dioxide?
No, cyanobacteria helped change the young Earth's atmosphere by producing oxygen through photosynthesis. The accumulation of oxygen in the atmosphere eventually led to the Great Oxidation Event, around 2.4 billion years ago, which transformed the atmosphere to be more oxygen-rich.
Is it true or false The amount of nitrogen oxygen and water vapor in the atmosphere varies from place to place?
True. The amount of nitrogen, oxygen, and water vapor in the atmosphere can vary depending on location, altitude, weather conditions, and human activities. These variations can impact local air quality and climate.
True or false the atmosphere is composed of a mixture of gases needed for predation?
False. The atmosphere is composed of a mixture of gases, but it is not specifically composed of gases needed for predation. It is primarily made up of nitrogen, oxygen, and traces of other gases that are essential for supporting life on Earth, not specifically for predation.
is the layer of the atmosphere where weather occurs is the thermosphere true or false?
False. The layer of the atmosphere where weather occurs is the troposphere, not the thermosphere. The thermosphere is located higher up in the atmosphere and is known for its high temperatures.
The region of the atmosphere closest to the earth's surface is the stratosphere True or false?
FALSE. The layers of the atmosphere begin with the troposphere (surface to about 10 km), and continue outward with the stratosphere, mesosphere, and thermosphere. The outermost layer, the exosphere, is sometimes included in the thermosphere, as is the ionosphere.
Is the mesosphere is the layer of the atmosphere that contain ozone true or false?
true
True or false there was a great deal of free oxygen in earths atmosphere before the first life forms developed?
false
Is it true or false does the increased amounts of oxygen in the atmosphere may be causing global warming to occur at a faster than usual rate?
If your question is really about oxygen then it is false. And oxygen is not increasing in the atmosphere. If you are talking about carbon dioxide, a gas that IS increasing in the atmosphere, then it is true. Carbon dioxide is causing the speeding up of global warming.
Did cyanobacteria change the young Earth's atmosphere by producing carbon dioxide?
No, cyanobacteria helped change the young Earth's atmosphere by producing oxygen through photosynthesis. The accumulation of oxygen in the atmosphere eventually led to the Great Oxidation Event, around 2.4 billion years ago, which transformed the atmosphere to be more oxygen-rich.
Is it true or false The amount of nitrogen oxygen and water vapor in the atmosphere varies from place to place?
True. The amount of nitrogen, oxygen, and water vapor in the atmosphere can vary depending on location, altitude, weather conditions, and human activities. These variations can impact local air quality and climate.
Almost all of the oxygen on the planet earth is found in the atmosphereis this statement true or false?
True. The majority of the Earth's oxygen (about 21%) is found in the atmosphere as molecular oxygen (O2). This oxygen is produced mainly by photosynthetic organisms such as plants and phytoplankton.
Are Organic compounds covalently bonded and they always contain oxygen?
Organic compounds are covalently bonded molecules that contain carbon, hydrogen, and sometimes other elements like oxygen, nitrogen, sulfur, or phosphorus. Oxygen is not always present in organic compounds, but it is a common element found in many organic molecules.
Is The probability that a gamete produced by a pea plant heterozygous for stem height Tt will contain the recessive allele 100 percent?
false
True or False An annelid's blood does not typically contain hemoglobin?
False!it does contain hemoglobin
True or false the atmosphere is composed of a mixture of gases needed for predation?
False. The atmosphere is composed of a mixture of gases, but it is not specifically composed of gases needed for predation. It is primarily made up of nitrogen, oxygen, and traces of other gases that are essential for supporting life on Earth, not specifically for predation.
True or false Elements abundant in the body are not abundant on Earth?
False. Elements abundant in the body, such as oxygen, carbon, hydrogen, nitrogen, and calcium, are also abundant on Earth. These elements are essential for life and can be found in various forms in the Earth's rocks, atmosphere, and oceans.
Organic compounds contain carbon atoms that are covalently bonded to other elements typically hydrogen and oxygen and other carbon atoms True or False?
true
