Science 2 out of 2

• Natural resources are materials or substances such as minerals, forests, water, and fertile lands that occur in nature and can be used for economic gain.
• Water it is a major resource that every organism needs in order to survive
• Earth's surface mainly composed of water by (71%)
• There are 97 % of saltwater
• There are 3 % of freshwater
• Freshwater is mostly inaccessible as ice and little remains as groundwater
• Saltwater served as a sanctuary for different marine marine life and provides a wide variety of seafood
• Soil is usually the topmost layer of earth, and provides minerals and physical support for plants
• Weathering is the breaking down of rocks into smaller particles
• Minerals are solid elements that naturally occur in earth

  There are two classifications of minerals

  Metallic minerals, and non-metallic minerals
• Metallic minerals l are those with high specific gravity, and metallic luster
• Non-metallic minerals are those that lack metallic properties
• Life forms have two classifications that are flora(plants) and fauna(animals)
• Fossil fuel come from the remains of plants and animals that lived a million years ago
• Coal is a black rock formed by plants remains
• Natural gas is naturally occuring gas mixture consisting of methane
• Geothermal energy is energy harnessed from volcanic vents and hot springs

  Philippines is also regarded as the 3rd producer of geothermal energy
• Hydroelectric power plants are harnessed energy from flowing water from dams, rivers and waterfalls
• Biofuel is energy resource from agriculture bin the for of produce or waste like animal excrements
• Nuclear energy is harnessed when an atom is split (nuclear fission) or when atoms collide(fusion)