The most appropriate answer would be magma. Lava is a magma that reaches the Earth's surface, which is technically it is also a magma, and magma is located below the Earth's surface.
Lava at Earth's surface or magma below Earth's surface cools and harden to form mineral crystals.
The two minerals that are found in cement are : Silica and calcite.
<u>Explanation:</u>
Different minerals form the composition of cement but the minerals that are most commonly found in cement are calcite which is contained in the limestone.
The other mineral that is used in the production of cement is silica in the form of raw rock type used to make cement which is found in clay. So they form an important part of formation of cement.
Answer:
The manufacture and use of these releases another greenhouse gas to the atmosphere, nitrous oxide. Therefore, increased use of fossil fuels and changes in agriculture have both contributed to the increase in global temperatures because they have both caused the release of more greenhouse gases into the atmosphere.
Explanation:
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The innermost layer or the lower most layer of the Sun's atmosphere is called the photosphere. It is the visible surface of the sun that we are most familiar with. The sun is a ball of gas; however, the solid shape we see is actually just a layer which is about 100 km thick. The correct answer to this question is letter "C. Photosphere".
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