Tag: introduction to natural resources (eco)

Cryogenic is nothing but the quantities that are involved with very low temperatures like ice. Among the given options ice sheets and ice chores are the examples of cryogenic indicators of climate change because ice and glaciers react to atmospheric changes and give clear signals about alterations in global climate.

The United Nations Framework Convention on Climate Change (UNFCCC) is an international environmental treaty  negotiated at the Earth Summit in Rio de Janeiro from 3 to 14 June 1992, then entered into force on 21 March 1994. 

A non-renewable resource is a resource of economic value that cannot be readily replaced by natural means on a level equal to its consumption. Most fossil fuels, such as oil, natural gas, and coal are considered nonrenewable resources because their reformation takes billions of years.

• Non-metallic minerals are minerals that have no metallic luster and break easily. These are also called industrial materials and are typically some form of sediment. Non-metallic minerals are not malleable.
• Nonmetallic minerals/ rocks like limestone, magnesite, dolomite, phosphorite, talc, quartz, mica, clay, silica sand, gemstones, decorative and dimension stones, construction materials etc. are the common nonmetallic minerals.

Metallic minerals are extracted from mineral deposits, which are concentrations of metallic minerals produced by geological processes. Some metallic minerals contain valuable metals, such as copper, gold, nickel, lead, zinc or platinum.