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Education Concept Tracker

A prerequisite knowledge graph of 1590 learning concepts across 8subjects. Track what you've mastered and see exactly what you're ready to learn next — the topics whose prerequisites you've already met. Built on the Marble Open Skill Taxonomy.

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Ocean Ecosystems

Science · Ocean Life · conceptual

Understand ocean ecosystems as interconnected systems where living things (producers, consumers, decomposers) and non-living factors (temperature, salinity, light, currents) all interact, and that changes to one part affect the whole system

What mastery looks like

  • Describe an ocean ecosystem as a system of living and non-living parts that interact
  • Name key non-living factors that affect ocean life: temperature, salinity, light, currents
  • Explain how a change in one factor (like temperature) cascades through the whole ecosystem

Check your understanding

Can Ocean Ecosystems explain why warmer ocean temperatures don't just affect one species — they change the whole ecosystem, from the plankton at the bottom of the food web to the whales at the top?