Answer:
Hornfels
Explanation:
Hornfels -
It refers to the category of metamorphic rocks that are heated and hardened by the igneous masses , is referred to as hornfels .
They are finely grained metamorphic rocks .
The temperature required for the formation of these rocks is about 1300 to 1450 degrees Fahrenheit .
These rocks are formed near lava flow , sill etc.
Hence , from the given information of the question ,
The correct answer is hornfels .
They export from the United States.
Explanation:
<em>The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat.</em> Gases in the atmosphere such as CO2, water vapor, methane, nitrous oxide, ozone and some artificial chemicals such as chlorofluorocarbons absorb and re-radiate the sun's energy maintaining the Earth's temperature at around 33 degrees Celcius, this happens especially with infrared light that wants to go back to space. This infrared heat spreads back to the land and oceans. This absorption does not happen with visible light, the radiation at 400-800nm easily passes through the atmosphere.
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