Unit 8, Concept 2

3. as you move up an energy pyramid population size ____________
4. grasses and ________ are pioneer species in secondary succession
5. taller plants taking over time is known as ecological ___________
8. mosses and ________ are examples of pioneer species in primary succession
9. these are organisms that eat other organisms for energy
10. these are organisms that turn solar radiation into chemical energy
14. primary succession can take place after ________ flows from volcanic eruptions
15. the last stage of ecological successions is called a __________ community
16. where all our energy comes from

1. forest fires and tsunamis are examples of _________ disasters
2. as you move down an energy pyramid energy availability___________
6. a change in an ecosystem over time is known as _____________ succession
7. producers that are first to arrive in an environment are called __________ species
11. this succession begins after a natural disaster
12. primary succession takes longer because __________ needs to form
13. this succession starts with bare rock (no soil)