Final answer:
Renewable resources can be replaced by natural processes as quickly as humans use them, while nonrenewable resources exist in fixed amounts and can be used up.
Step-by-step explanation:
Renewable resources can be replaced by natural processes as quickly as humans use them, while nonrenewable resources exist in fixed amounts and can be used up. Some resources, such as fossil fuels, are nonrenewable, while others, like sunlight and wind, are renewable. Some resources, like metals and minerals, can be both renewable and nonrenewable depending on their usage and recycling.