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Gr. 5 Science Chapter 4 Review
What are the 3 types of symbiosis?
Organisms that steal food from hosts or harm hosts
4 things organisms compete over
What is the "rebirth" of an ecosystem called?
Describe how "primary succession" starts (6 things)
1. Bare rock
2. Pioneer plants make chemicals that weather rock
3. Makes soil
4. Moss grows
5. Grass grows
6. New life to bare rock
Describe how "secondary succession" starts (3 things)
1. Soil already there
2. It contains seeds
3. Repairs a damaged ecosystem
3 causes of succession
1. Change in climate
2. Actions of animals living there
3. Introduction of a new plant or animal
Paper coated with wax
Paper coated with plastic
#5 or #6 plastics
Formed when chemicals from burning fossil fuel mix with water vapor in the air
3 methods of conserving resources
Cleaning & restoring a damaged ecosystem
A lot of time
How can we accomplish "reclamation?"
Reduce the amount of pollution