What are the three Rs?
a. reduce, reuse, read
b. rehab, reduce, results
c. recycle, reward, reduce
d. reduce, reuse, recycle
What is a carbon footprint?
a. is an ethical or philosophic value
b. is a measurement of greenhouse gases that are created or units of carbon dioxide that are generated
c. is the total cost of something over its lifetime
d. is the quotient from dividing the total amount of greenhouse gases by the estimated annual release of carbon monoxide