SME
Grade 9 Science · Problem type
Which aquatic ecosystem is it?
Use this for “Where does fresh water mix with salt water?”
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Which ecosystem does it describe?
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Assumptions
•
Aquatic ecosystems are sorted by how salty the water is, how deep it is and how fast it moves.
•
Sunlight reaches only the top 200 m or so of water, so producers live near the surface or the shore.
Topic check
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