Across
- 2. a non-living part of an ecosystem is known as an ____________ factor.
- 6. the natural home or environment of an organism
- 7. Tough outer covering of plant cells that protects and keeps its shape
- 10. a biological community of interacting organisms (biotic factors) and their physical environment (abiotic factors)
- 12. the maximum population size of the species that the environment can sustain indefinitely
Down
- 1. a series of steps in which organisms transfer energy by eating and being eaten
- 3. the variety of life in the world or in a particular habitat or ecosystem
- 4. plant cell organelle that converts light into sugar through photosynthesis
- 5. the part of the cell containing DNA and RNA and responsible for growth and reproduction
- 8. cold-blooded vertebrate living on land but breeding in water
- 9. the powerhouse of the cell
- 11. an organism that benefits by obtaining the nutrients in a parasitic relationship