Pg 182 # 18-21
18. A. What is the difference between reusing and recycling?
a. Reusing a resource is when a substance made for one thing is used for another, while recycling involves remelting substances so that they can be made into the same or other products.
B. Give two examples of each, other than those presented in the textbook.
a. REUSING: Having an empty soda bottle, then refilling it with water for another occasion.
b. RECYCLING: Having a plastic bag that can be sent to the recycling plant to be recycled into a plastic bottle or utensil.
19. In addition to those found in the textbook, list four examples of
a. Renewable resources.
i. Water, oxygen, timber (wood), fruits and vegetables.
b. Nonrenewable resources.
i. Coal, oil, gas, copper.
20. Classify each use as either recycling or reusing:
a. Storing water in used juice bottles for an emergency.
i. Reusing
b. Converting plastic milk containers into fibers used to weave clothing fabric.
i. Recycling
c. Packing breakable items shredded newspapers.
i. Reusing
21. How would the life cycle of a light bulb compare to that of a newspaper? Consider material sources and disposal recycling.
a. The life cycle of a light bulb would compare to that of a newspaper because they can both be recycled. The difference is that newspaper can also be reused, as in cushioning breakable items, while the glass from a light bulb cannot be reused for any other use.
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