Review: Grade 7 Unit 07: Organisms and Their Environments

1. 1. What would happen to local populations in a swamp ecosystem if the area started to dry out? In 100 years there is rarely any standing water.
2. 2. What is a microhabitat? Why are some organisms limited to them?
3. 3. What makes biodiversity important to the sustainability of an ecosystem?
4. 4. What does a pioneer species do? What is a common example in primary succession? Secondary succession?
5. 5. A climax community exists when there is equilibrium in an ecosystem? What does this mean? What does it look like in a grassland vs. a pine forest?
6. 6. What is the difference between primary and secondary succession?
7. 7. What is habitat fragmentation? How does it affect natural organisms?How is it a possible advantage in planting crops?