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Living Environment: SQA National 5 Environmental Science Area 1 quiz quiz

16questions. Pick an answer and you'll see why right away.

  1. What is an ecosystem?

  2. Which of these is an abiotic factor?

  3. In a food chain, which direction does the arrow point?

  4. Roughly how much of the energy at one trophic level is passed on to the next?

  5. What does the term niche describe?

  6. A food web shows interdependence. If a prey species declines sharply, what is the most likely effect on its predators?

  7. Biodiversity is described at three levels. Which set is correct?

  8. Why is high biodiversity important for an ecosystem?

  9. What two features must a region have to be classed as a biodiversity hotspot?

  10. How can an indicator species be used?

  11. What is the key difference between how energy and nutrients move through an ecosystem?

  12. What is the main role of decomposers in nutrient cycling?

  13. Which process removes carbon dioxide from the atmosphere?

  14. In the nitrogen cycle, how do plants obtain nitrogen?

  15. Which human activity is the single greatest threat to biodiversity?

  16. What is biological control?