Lia looked out the window and saw birds at a feeder. How was Lia able to see the birds?
Light reflected off the birds and traveled to Lia's eye.
Lia's eye made light that traveled to the birds.
Beams of light traveled back and forth between the birds and Lia's eye.
The birds produced beams of light that traveled to Lia's eye.
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Lia looked out the window and saw birds at a feeder. How was Lia able to see the birds?
Light refle...
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