A mineral is a naturally occurring, inorganic (not produced by an organism) solid substance, that has a specific crystalline structure and chemical composition. All minerals have definite chemical constituents that differ within a specific limited range. The physical properties of minerals such as color, solubility, streak, hardness, luster, specific gravity, cleavage, are used in identifying them. Examples of minerals include halite, talc, galena and diamond.
An example of a limiting factor that humans use to control the carrying capacity of an environment for a particular type of organism would be deforestation. Carrying capacity is the the largest number of individuals of a particular species that a particular environment can support.