Across
- 5. Capable of maintaining the current community at a steady level without exhausting natural resources or causing sever ecological damage
- 7. The divergence of populations or subpopulations of the same species to the point where they can no longer interbreed
- 8. The movement of humans to a different geographical climatic region
- 10. A change in the DNA sequence of a chromosome
- 14. The deterioration of an environment by the reduction in the quantity and quality of resources
- 15. Events that cause changes to Earth's surface, such as earthquakes and volcanic eruptions
- 17. The sum of the different forms of living things in a given area or population
- 18. A harmful substance that contaminates a natural environment
- 19. The reduction of the quality or quantity of resources
- 20. Being in short supply of a resource
- 21. A scientific or industrial process, invention, or method used to increase productivity or benefit society, the environment, or both.
Down
- 1. Harm to humans caused by natural events
- 2. Natural events that cause harm to humans
- 3. When individuals of a species cannot reproduce with others of their species due to various types of barriers
- 4. Resources that are found in nature
- 6. The total number of people inhabiting Earth
- 9. The effect humans have on the surrounding environment
- 11. A grop of people with shared beliefs or purposes
- 12. The interaction between Earth's physical, chemical and biological processes
- 13. growth in an environment
- 16. The deterioration of the resources in an ecosystem by the reduction in the quantity and quality of resources