Environmental science

Revision Exercise

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Across 3. A particular type of organism, where two individuals interbreed to produce offspring 4. The particular place where a community of organisms is found 7. Competition between different species 9. Competition between members of the same species 12. All of the different populations of organisms that live together 14. The connection between predator and prey populations 15. Doesn't live long but reproduces a lot 16. Factors whose effects on a population are relatively greater at higher population densities than at lowere population densities 17. Factors that slow down the growth rate of species 19. The maximum number of organisms an area can support sustainably 20. Movement of a specieas from one ecosystem to another

Down 1. An ecosystem covering a broad area which has distinctive climatic and soil conditions 2. A factor whose effect on a population is the same whatever the population (usually Abiotic) 5. Non living components of the environment 6. Caused by living organisms 8. All the members of a single species living in a particular area at the same time 10. Something that live in or on something else and causes harm 11. The part of the earth where life can exist 13. Lives long and isn't predated 18. A description of the precise way in which an organism fits into its environment.

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