Across
- 3. (2 words) organism that sits at the top of the food chain and typically has no natural predators
- 7. relationship where both species benefit from each other
- 9. process where the concentration of toxic substances multiplies as they move up the food chain
- 10. relationship between two or more species living closely together
- 11. (2 words) forms the foundational base of a food chain
- 12. relationship where one organism benefits and the other is harmed
- 15. buildup within an individual over time, as they accumulate a substance faster than they can excrete it
- 16. (2 words) species that has a disproportionately large effect on its natural environment relative to its abundance and without which the ecosystem would be dramatically different or cease to exist altogether
- 17. (2 words) organism that survives primarily by eating primary consumers
Down
- 1. (2 words) highly abundant, habitat-forming species that physically shapes and defines an entire ecosystem
- 2. organism that cannot synthesize its own food and instead must obtain energy and nutrients by eating
- 3. organism that can convert abiotic sources of energy into energy stored in organic compounds
- 4. relationship where one species benefits and the other is not helped or harmed
- 5. organism that primarily survives by hunting, killing, and consuming other animals
- 6. (2 words) linear sequence of organisms where energy and nutrients are transferred
- 8. nonliving factors in an ecosystem
- 11. (2 words) organism that eats plants and plant-like organisms
- 13. (2 words) complex network of interlocking food chains that illustrate how energy flows through an ecosystem
- 14. (2 words) position an organism fills in its food chain/web