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High School Biology: Communities and Populations (Fill in the blank)
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High School Biology: Communities and Populations (Fill in the blank)
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10 Questions

1. The first species to colonize an area of bare rock are called __________ species.

2. Something supplied by nature that helps support life is known as a(n) __________.

3. __________ refers to the number of different species in an ecosystem or the biosphere.

4. __________ is a mixture of eroded rock, minerals, and partly decomposed organic matter.

5. Species introduced into new habitats by humans are called __________ species.

6. A species that plays an especially important role in its community is called a(n) __________ species.

7. Population __________ is the average number of individuals per unit of area or volume.

8. The use of resources in a way that meets present and future needs is called __________.

9. __________ occurs when competing species evolve different adaptations.

10. The recent increase in Earth’s average surface temperature is called __________.

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