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Card 16
Front
How do microwave ovens protect the users from microwave radiation?
Back
Card 17
Front
Some people believe that there are risks associated with using microwaves. Why is this?
Back
Card 18
Front
What is the greenhouse effect and why does it occur?
Back
Card 19
Front
How does the O zone layer protect us from UV radiation?
Back
Card 20
Front
What will happen if the amount of ozone in the atmosphere decreases?
Back
Card 21
Front
What processes in the carbon cycle remove co2 from the atmosphere?
Back
Card 22
Front
What processes in the carbon cycle return carbon dioxide to the atmosphere?
Back
Card 23
Front
What are the consequences of global warming?
Back
Card 24
Front
What are the three types of electromagnetic radiation that can transmit information?
Back
Card 25
Front
Why are radio waves and microwaves good at transmitting information over long distances?
Back
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