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Blue Planet - Open Ocean

The open ocean is often referred to as a "marine desert." This may seem contradictory to students, who perceive a desert as a hot, dry, sandy ecosystem. However, the biodiversity in the open ocean, away from the flow of nutrients from the coasts, is the lowest for all aquatic ecosystems.

Key Concepts: Open ocean, aquatic ecosystems, euphotic zone, adaptations, migration, limiting factor.

Answer Key: Available for purchase at the environmental science instructor resources subscription page.

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