At the great cave of the Northeast, an elevator takes you 156âbelow ground.... At the great cave of the Northeast, an elevator takes you 156âbelow ground. The doors open into a prehistoric underground cavern 6,000,000 years in the making! Trained tour guides help negotiate the cave and teach about its magnificent natural features. Back on the surface, mine for gemstones at Howe Caverns Mining Co.
Lumber (American English; used only in North America) or timber (used in the rest of the English speaking world) is a type of wood that has been processed into beams and planks, a stage in the process of wood production. Lumber is mainly used for structural purposes but has many other uses as well. There are two main types of lumber.
Nonrenewable Resources. A nonrenewable resource is a resource that can be used up. Fossil fuels, which include coal, oil, and natural gas, are nonrenewable because it took millions of years for them to form. Once we use up our fossil fuels, they will be gone for good. Many power plants use fossil fuels.lectricity can be produced using several kinds of renewable resources. Wind energy can produce electricity in regions where steady winds blow. Giant wind turbines capture the windâs energy and use it to power generators. Biomass is material that is formed from living organisms, such as wood or agricultural wastes.