What happens during coal formation after plants die and fall to the bottom of a swamp?(1 point)
Responses
Overall plant growth declines.
Overall plant growth declines.
Carbon-rich coal is formed.
Carbon-rich coal is formed.
Sediment and rock pile on top.
Sediment and rock pile on top.
Heat and pressure build up.
Heat and pressure build up.
How is coal extracted from the earth? Select the two correct answers.(1 point)
Responses
by heating and boiling it
by heating and boiling it
by hydraulic fracturing
by hydraulic fracturing
by drilling wells
by drilling wells
by surface mining
by surface mining
by underground mining
by surface mining
by underground mining
Which fossil fuel is extracted by fracturing rocks?(1 point)
Responses
crude oil
crude oil
coal
coal
natural gas
natural gas
gasoline
natural gas
Which of the following are considered fossil fuels? Select the three correct answers.(1 point)
Responses
carbon
carbon
natural gas
natural gas
hydrogen
hydrogen
oil
oil
coal
natural gas
oil
coal