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.
Answer:
Iceland celebrates the first day of summer as an annual public holiday in April.
Answer:
Plate tectonics cause earthquakes
Explanation:
Earthquakes are caused by the movement of plate tectonics. Where there is a fault line there is plate tectonics, and when that fault line moves the plates shift and cause the earth to shake AKA an earthquake.
Hope this helps! :D