What is formed from layers of sediment covering the remains of organisms over time?
metal cold rings coral reef sea urchins natural gas exoskeleton shells
A B C D E F G H
Natural gas is a fossil fuel.
natural gas is formed from layers of sediment covering the remains of organisms over time
What is formed from layers of sediment covering the remains of organisms over time? (A) metal (B) cold (C) rings (D) coral reef (E) sea urchins (F) natural gas (G) exoskeleton (H) shells