A natural recource
Silicon is a naturally-occurring substance.
Scandium (natural) is a mono-isotopic element - scandium-45.
While natural gas is a fossil fuel and not renewable, methane (the main component of natural gas) is recoverable from many industrial processes such as anaerobic digestion and by tapping into gas created by landfill sites, This secondary source is producible as it involves the chemical reduction of biological materials.
Si is the short form for Silicon and silicon is not a metal.
main
coaland oil
A natural recource
wheat were in the great plains
The everglades are a landmark because it is a Natural Recource and has plants and animals living there.
wind is a renewable recource because wind shows up mostly everyday and it can always renewable.
All are natural chemical elements: silicon and antimony are metalloids, polonium is generally considered a metal.
Silicon is a marvelously abundant element, and it is most often found as an oxide. Many rocks are silicates, which are silicon oxides with a bit of metal thrown in. Sand us usually silicon oxides.
renewable
Silicon is a naturally-occurring substance.
spriters recource
non-renewable