Natural materials are defined as products and physical materials from the natural world. This definition is in contrast to man-made or synthetic materials. There is a wide variety of natural materials that exist, and they can be roughly grouped into two categories: organic natural materials and inorganic natural materials.
Organic materials include animal and plant products; materials like wood, fiber, bark and soil are some examples. Inorganic materials are mineral products like stone, metal and composites like clay. Generally, inorganic materials contain traces of organic materials, and vice versa. Inorganic natural materials are, by definition, unprocessed. Sand, for example, is an inorganic natural material composed of silica and other minerals; glass is a processed synthetic product of silica and other additives. Leather, on the other hand, is a processed material from a natural source. Animal skins are not considered immediately natural, as human intervention is required to process the skins to create leather.
Natural materials are considered by some to be a good source of objects for children's play. Stones, pine cones, leaves, nuts and branches are some of the many materials that can be used. Children can benefit from the outdoor setting in gathering these materials and can use them in counting, pointing, building and sorting exercises.Learn More
A natural resource map shows the expanse of natural resources found on and in the surface of the Earth. Natural cover of the worlds, world map of natural vegetation and world map of minerals are examples of natural resource maps.Full Answer >
The most common natural resources of Cuba are cobalt, nickel, iron ore, chromium, copper, salt, timber, silica, petroleum and arable land. The by-products of arable land in Cuba, namely sugar, tobacco and rum, are the most important export items of the Cuban economy.Full Answer >
India contains an abundance of natural resources, including coal, iron ore, petroleum, chromite, natural gas, limestone, mica and manganese, along with diamonds, rare minerals and agricultural land. India contains large reserves of coal, making it the fourth largest coal supplier in the world. Its resources span the country, appearing in forests, mines and open fields.Full Answer >
The effects of natural resource depletion vary depending on the type of resource. Reduced water quality affects humans and animals by reducing the amount of healthy and safe drinking water, while the rapid use of fossil fuels introduces foreign and harmful toxins into waterways, the ground and the atmosphere, and affects human populations by increasing the cost of transportation.Full Answer >