Question

guided practice coal forms over millions of years from the buildup of sediment and ______. a. swamps b. a warm, humid climate c. decaying animal life d. heat and pressure

Explanation:

Coal forms when plant matter (from ancient swamps, in a warm humid climate) is buried under sediment, then subjected to intense heat and pressure over millions of years. Decaying animal life forms fossil fuels like oil, not coal, while swamps and warm climate are the initial environments, not the key factors alongside sediment for coal formation.

Answer:

D. heat and pressure