Environmental Science 14th Edition by Tyler Miller ,Scott Spoolman

تمرين 22

What is a resource Distinguish between a perpetual resource and a renewable resource and give an example of each. What is the sustainable yield of a renewable resource Define and give two examples of a nonrenewable resource. Distinguish between recycling and reuse and give an example of each. What percentage of the nonrenewable metals and plastics that we use could be recycled or reused Distinguish between more-developed countries and less-developed countries and give an example of a high-income, middle-income, and low-income country.