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9 Cards in this Set
- Front
- Back
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Give one examples of a large and small ecosystem |
Forest- large ecosystem Pond- small ecosystem |
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What is predation |
When animals interact with other animals in their ecosystem |
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Name two ways we can measure population size (abundance) |
Counting all the organisms in an area
Estimated by taking samples using quadrats
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How do quadrats work |
Quadrats are placed randomly in the area the number of induviduals in each quadrat are counted |
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Whats the formula for population size |
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Whats the purpose of a food web (2) |
To show the relationship between the organisms in a community
To predict what will happen if there are changes to the ecosystem |
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If the majority of top predator animals die, what will happen to the tertiary consumer animals |
The amount of tertiary consumer animals would increase as less are being eaten by the top predators |
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If the number of tertiary consumers increase, what will happen to the number of secondary consumers |
the number of secondary consumers would decrease as more would ve eaten by the tertiary consumers |
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In a 2m quadrat on a rocky shore there are 50 limpet shells. The total area of rocks is 400m Estimatr the total population size |
400÷2=200 200×50=10,000m2 |
