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Oxygen began to enter the atmosphere of the early Earth as a result of?
Wiki User
∙ 12y ago
hot air .dude that is easy
Wiki User
∙ 12y ago
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What happened to Sputnik after it was out of space?
Satellites in low orbit are affected by drag from the very top layer of the atmosphere. This drag eventually slows them down, which brings them in contact with denser layers of atmosphere, which slows them down and brings them down even more. Eventually, they burn up by the heat from rushing real fast through the air.
What are the important factors that enable the earth to support the great diversity of life?
The primary factor is that Earth is located in the "Habitable Zone," an area around our specific star in which life-supporting planets could develop. Habitable zones are different sizes and different distances for each star. This allowed a life-supporting atmosphere to develop (or at least, what would become one, as the atmosphere then was primarily sulfur and nitrogen gases), which caused rain, which formed oceans. The water reacted with the air and slowly, single-cell bacteria formed. Over billions of years, Earth went from molten to frozen to jungle and then began to stabilize, forming the diverse ecology seen today. Life adapted, and it's all evolution from there.
How is planet earth made?
About 5 billion years ago our Solar System did not exist at all. Instead there was in its place a large cloud of gas and dust called a nebula. Over many millions of years the immense gravity of this large cloud caused the dust and gas to slowly fall inward towards its center. As matter in the cloud fell towards the center it began to spin. The basic laws of motion cause this spinning. Objects in space do not speed up, or slow down unless their speed is changed by something else. Also all objects move in the same direction until their path is changed by something else. As the dust and gas fell into the center of the cloud each particle resisted slowing down, or changing directions. However the gravity of the growing matter in the center tried to pull the particles directly to the center. The strength of the gravity was not enough to pull the particles directly in, but it was strong enough to bend their paths around into a circle. As the cloud began to swirl it also flattened out, much like spinning a lump of dough on your hand causes it to flatten out into a pizza crust. Now we have a flat spinning cloud of dust and gas. The center continued to collect more and more matter growing larger and larger. At the same time smaller clumps of matter began to form throughout the disk. These smaller clumps would eventually become planets, moons, asteroids, and comets. As matter collects into clumps it heats up. The more matter, which collects the hotter, an object becomes. The Earth is still very hot in its core; this heat is left over from when the Earth originally formed. Eventually the Sun became so hot in its core that it ignited, turning hydrogen into helium. Once the Sun ignited the formation of the Solar System quickly ended. The new stars intense radiation and solar winds blew away the remaining dust and gas in the cloud so that the Sun and its planets could not grow any larger. The planets closest to the Sun (Mercury, Venus, Earth, and Mars) are called the terrestrial planets. They are small dense rocky planets. The outer planets (Jupiter, Saturn, Uranus, and Neptune) are called the Jovian Planets. They are large and made up of gas. Pluto is closer to a comet than a planet.
Is it likely only God can explain the truth about how life on Earth began since proven science and the Bible have conflicts with each other?
Perhaps the Episcopal Church has the answer when it affirmed via Resolution A129, which dealt with this issue, that Episcopal dioceses and congregations seek the assistance of scientists and science educators in understanding what constitutes reliable scientific knowledge. In other word, the truth about how life on Earth began must ultimately come from scientists.
How Does Energy From the Sun make Life Possible on Earth?
This is because all living organisms depends directly and indirectly on plants. Also, Earth's coal, natural gas, and oil began as plants. However, plants depend on sunlight for the process of manufacturing their food, mostly by photosynthesis, but in all cases by Sun power. Also, the temperature on Earth's surface depends strongly on the Sun.
How did free oxygen come about in the atmosphere?
2.2 Billion years ago Photosynthetic bacteria in the ocean began churning out oxygen as a result of photosynthesis. Then, oxygen gas started accumulating in the atmosphere.
When organisms began using photosynthesis what gas was added to the atmosphere as a result?
Oxygen is one of the products of photosynthesis and is the gas that rose in abundance in the atmosphere due to the process of photosynthesis.
How the atmosphere evolved?
After the Big Bang, the atmosphere of earth was comprised of mostly hydrogen, radiation and helium. These are the gases associated with the interior of the planet. Over time, as life appeared on earth, oxygen began forming, and other dangerous gases began receding.
Why does earth need oxygen?
The oxygen in the air of earth is the result of biological processes over the past 4000 million years. Trees give out oxygen as they photosynthesize ------------------------------------------------------------------------------------------- Initially Earth's atmosphere did not contain free Oxygen (we know this from the chemistry of sediments that were first formed). Life on earth then happened and by the process of photosynthesis slowly began releasing Oxygen into the environment. At first this Oxygen reacted chemically with stuff (eg Iron salts) in the environment but over time all this "stuff" was converted and free Oxygen began to appear in the environment. This speeded up the development of life and about 600 million years ago there was enough Oxygen for life to use it to build calcareous shells and eventually for life to move onto the land. Thus life has made the planet we have today, Earth has been "terraformed" and now has an Oxygen rich atmosphere.
How has the earth's atmosphere changed since the earth began?
it has beome more polluted
Why do you consider life possible only on planets where there is oxygen?
This is a false presumption. The life that exists on Earth now is dependent on oxygen, but it was not always so. Life on Earth emerged long before there was any noteworthy amount of oxygen. In fact oxygen was highly toxic to the first organisms. Oxygen began to build up in the atmosphere when cyanobacteria began carrying out photosynthesis, which uses sunlight to convert water and carbon dioxide into sugar and oxygen.
What gases were not present in earths early atmossphere?
Man-made gases such as tear-gas, chlorinated hydrocarbons and their ilk. OXYGEN. That was made by plants, long after the Earth began. In fact, the first oxygen appearing in the atmosphere came from bacteria about 3.5 billion years ago.
What was the contents of the atmosphere when earth began?
floating semen everywhere
What happen if there is no oxygen from the beginning?
There was no free oxygen when the earth began and when life began on the earth. Eventually single organisms developed in the oceans that released oxygen as part of their metabolic activity. After millions of years, enough free oxygen was present in the oceans and in the atmosphere to support the development of life that depended on oxygen.If there had never been any oxygen at all in the universe, the development of the planet earth would have been very different, since there would have been no oxygen to combine with hydrogen to form water, and life as we know it would never had developed.
What type of atmosphere is present when earth is formed?
The atmosphere of Earth has changed since its formation. When the Earth formed 4.6 billion years ago, it was a molten ball of rock with an atmosphere of hydrogen and helium. This atmosphere was blown away by the solar winds because there was no magnetic field to protect the Earth. After the Earth cooled, volcanoes released gases such as water vapour, ammonia and carbon dioxide. The ammonia was broken down into nitrogen and hydrogen by sunlight. Eventually, the evolution of cyanobacteria released oxygen into the atmosphere, which began to have a similar composition to the modern atmosphere.
Which was least likely to have been a component of earths atmosphere before life began?
oxygen
When oxygen started building up in the atmosphere did all organisms began to thrive?
Yes
