Answer: D. changes direction
Explanation: A lens works by refraction: it bends light rays as they pass through it so they change direction.
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There are usually 5 biomes in a ecosystem <span />
Answer:
The correct answer is Choice B.
(The muddy water shows the sediment is being carried from one place to another.)
Explanation:
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a large area of flat unforested grassland in southeastern Europe or Siberia
