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Advanced Placement (AP), 24.06.2019 08:00
What statement is true about all chemical changes? a) chemical changes can be undone. b) chemical changes cannot be reversed. c) chemical changes change the color of objects. eliminate d) chemical changes do not form new products.
Answers: 2
Advanced Placement (AP), 26.06.2019 13:50
Which of the following activities would conserve the most energy? installing a dimmer switch on a light using a blender instead of a food processor hanging clothes to dry on a clothesline instead of ironing them opening a window instead of turning on the air conditioning setting your computer's screen saver to turn on after less time has elapsed
Answers: 1
Advanced Placement (AP), 28.06.2019 07:30
Which fossil fuel releases the least amount of carbon dioxide in a year a.natural gas b.coal c.nuclear energy d.oil
Answers: 2
Define social issues...
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