Natural resources are substances that occur naturally. They can be sorted into two categories: biotic and abiotic. Biotic resources are gathered from the biosphere or may be grown. Abiotic resources are non-living, like minerals and metals.

Examples of biotic natural resources
Birds
Ferns
Flowering plants
Fruits
Fungi
Insects
Lichens
Mammals
Microbes
Mosses
Natural gas
Petroleum
Reptiles
Shrubs
Trees
Worms

Examples of abiotic natural resources
Barites
Bauxite
Chromite
Coal
Copper
Diamond
Gravel
Gold
Iron Ore
Lead
Marble
Limestone
Nickel
Platinum
Pumice
Salt
Sand
Silver
Sulfur
Talc
Vanadium
Zinc