Answer:
high temperature and high pressure
Explanation:
Coal is one of the solid minerals found underground. Coal is believed to have been formed from vegetation during the carboniferous era. The decomposition of these materials under pressure in the absence of air led to the formation of coal.
In the process of carbonization, the vegetation was converted in stages to peat, lignite, bituminous coal and anthracite.
The formation of anthracite is favored by high temperature and high pressure underground.
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B. has undergone many changes
No, Earth is not the third largest planet in our solar system.
Jupiter is the largest, Saturn is the second largest, and Uranus is the third largest.
Earth is the fifth largest planet in our solar system
Answer: d. Felsic from bottom to top
Explanation:
Most of the known volcanoes are Stratovolcanoes. They are also called Composite volcanoes because they are structured from layers of materials such as lava, ash and tephra that came out during their eruption with each eruption adding more layers than the last.
The lava that flows from a Stratovolcano is usually made up of Felsic along with lesser amounts of silica and mafic. As a result, most of the rocks that make up such volcanoes are Felsic.
