Question What happens during coal formation after plants die and fall to the bottom of a swamp?(1 point) Responses Sediment and rock pile on top. Sediment and rock pile on top. Heat and pressure build up. Heat and pressure build up. Overall plant growth declines. Overall plant growth declines. Carbon-rich coal is formed.
Heat and pressure build up, causing the plant material to undergo chemical and physical changes. Over time, carbon-rich coal is formed as a result of this process.
