El efecto invernadero en inglés estilo apa

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Greenhouse 1


October, 2010

Greenhouse 2


The temperature of our planet is perfect for life. Not too cold, like Venus, not too hot, like Mars. With these conditions, life spans everywhere.
The Earth receives heat from the sun Some gases in the atmosphere retain it i prevent this heat from escaping back into space.
Today thisdelicate equilibrium is in danger because of pollution of the atmosphere, causing hot gases retained near the surface. Temperatures around the globe have risen over the last century and this could cause a global climate change.
Rising sea levels and other changes in the environment pose a threat to all living beings.
The term greenhouse effect refers to the phenomenon whereby the earthis kept warm and warming of the planet. To maintain optimum environmental conditions for life is essential to understand the complex relationships established between the Earth and atmosphere.

Greenhouse (Thesis Statement)

The greenhouse effect is the rise in temperature that the Earth experiences because certain gases in the atmosphere (water vapor, carbon dioxide, nitrous oxide, andmethane, for example) trap energy from the sun. Without these gases, heat would escape back into space and Earth’s average temperature would be about 60ºF colder. Because of how they warm our world, these gases are referred to as greenhouse gases.

Greenhouse 3

A good place to start the debate would be saying that the earth is like anisland of life in the midst of empty space. Scientists do not believe that life exists elsewhere in the solar system. In contrast, the conditions of our country is perfect. Lacks neither air nor water and sun gives us light and heat.
Our planet is surrounded by the atmosphere. It is a thin layer of gases (mainly oxygen and nitrogen) which extends to about 700 km. above Earth's surface. Itis in the atmosphere, which keeps the planet warm where all weather phenomena occur. This layer also contains other chemical elements: nitrogen, carbon and fry, constantly transferred to Earth and used by living things.
The temperature of our planet are the most suitable for the animals and plants survive and reproduce. Temperatures vary depending on the area of the Earth, give the cold ofthe polar ice caps to the extreme heat of the rainforest and desert. But living things have adapted to all environmental conditions and can find life almost the entire planet.
Des space can see traces of the Earth's climate. The rotation of the planet and the temperature differences cause movements of air over the surface. This will form the wind, clouds and rain. The clouds carry the rainthat fills the rivers and lakes. The planet's temperature causes the water stays in liquid state. If it's too cold, the water would freeze and if it's too hot, it would become water vapor.
The Earth's atmosphere is composed of many gases. The most abundant are nitrogen and oxygen (the latter is the need to breathe). The rest, less than one hundredth part, are gases called "greenhouse." Wecan not see or smell, but they are there. Some of them are carbon dioxide, methane and nitrogen dioxide.
"In small concentrations of greenhouse gases are vital to our survival" (Bahl, 2009, p. 95). When sunlight reaches the Earth, some of this energy is reflected in the clouds, the rest passes through the atmosphere and reaches the ground. Thanks to this energy, for example, plants can growand develop.
But not all the sun's energy is harnessed on Earth, a part is "returned" to space. Since Earth is much colder than the Sun, can not return the energy as heat and light. So send it

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in a different way, called "infrared." An example of infrared...
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