Conservation, sustainable use and protection of natural resources (1- include) _______ plants, animals, mineral deposits, soils, clean water, clean air, and fossil fuels such as coal, petroleum, and natural gas. Natural resources (2- group) _______ into two categories, renewable and nonrenewable. A renewable resource (3- be) _______ one that (4- may replace) _______ over time by natural processes, such as fish populations or natural vegetation, or (5- be) _______ inexhaustible, such as solar energy. The goal of renewable resource conservation (6- be/ ensure) _______ that such resources (7- not consume) _______ faster than they (8- replace) _______. Nonrenewable resources (9- be) _______ those in limited supply that (10- cannot replace or can replace) _______ only over extremely long periods of time. Nonrenewable resources include fossil fuels and mineral deposits, such as iron ore and gold ore. Conservation activities for nonrenewable resources focus on maintaining an adequate supply of these resources well into the future.