This water is too salty to drink or to use for farming. Ocean water can go through a costly desalinization process that makes it useful for drinking, industry, or farming. Water is an important resource for food as it is the habitat of fish. Minerals are a non-renewable resource found in rocks, soil, or in the ocean water. Minerals that are mined for profit from rocks are referred to as ores.
Metallic ores contain metals, such as copper, aluminum, gold, silver, and iron.
Non-metallic ores are ores such as sulfur, limestone, and quartz. Fossil fuels were made through heat, pressure, and time acting together on the remains of ancient plant and animal life. Oil or petroleum was formed from the remains of microscopic marine organisms and is found in shale or sandstone. Coal is made from the remains of plants and animals originally found in ancient swamps. Natural gas is found on the top of the pools of oil.