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CH 21
review 2
| Term | Definition |
|---|---|
| define endangered species in your own words | facing a very high risk of extinction |
| distinguish between brithrate and death rate | birthrate is how many new people come, death rate is how many leave |
| the instinctive movement of a population from one lace to another | migration |
| Rabbits move into a new field where there is plenty of room to dig new burrows. This is an example of | A |
| summarize copy and fill in the graphic organizer below to identify the three major factors that affect population size | birthrate, death rate, and migration |
| predict what could happen to the size of the human population if a cure for all cancers were discovered | increase |
| Recommend and action human could take to help prevent the extinction of tropical organisms | reducing deforestation |
| what does each unit on the y-axis represent? | |
| what does the lowest point on the blue line represent? |