The Physical EnvironmentNatural Resources |
What is a fossil |
The outline of the remains of a plant or animal embedded in rock is called a fossil. Fossils are formed when a plant or animal dies and becomes covered up by sediments. Over time, the layers compress the remains, which are then embedded into the rock.
The increasing scarcity of fossil fuels such as crude oil has forced exploration offshore. Ocean rigs such as this one can be vulnerable to hurricanes and oil spills.