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In your discussion, you may want to use some of the words you've
encountered while learning about waves, such as:

electromagnetic • spectrum • visible • radiation
ultraviolet • infrared • radio • microwave • transmission
medium • wavelength • frequency • analog • digital

Should we transmit messages, or just listen for ones we might receive, or neither?

Here are some ways you can start your sentences:

• One reason for ………… is...
• Another reason is...
• Additionally…

• However, on the other hand...
• A reason not…
• Furthermore, we should not because…