Life on Earth - Topic 3 - Factors affecting Biodiversity & Sampling Techniques
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| Define biodiversity. | The variety and abundance of living things.
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| What is the importance of biodiversity? | Variety allows organisms to adapt to changing environmental conditions.
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| What 3 things distinguish a biome? | Climate, flora & fauna
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| What are the 2 main factors affecting global distribution of biomes? | Rainfall & temperature
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| What do you call the 'living' factors that affect biodiversity? | Biotic factors
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| What do you call the 'non-living' factors that affect biodiversity? | Abiotic factors
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| Give 2 examples of how humans can impact biodiversity. | Pollution & deforestation
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| Give 3 examples of biotic factors. | Predation, grazing, disease
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| Name 4 abiotic factors. | Temperature, moisture, light intensity & pH
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| What sampling technique would be used to sample the insects on a forest floor? | Pitfall trap
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| What sampling technique would be used to sample the plants growing in a field? | Quadrat
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| How would you correctly use a quadrat? | Throw it randomly and repeat many times
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| What could be an error when setting up a pitfall trap? | Not camouflaging it properly.
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| What would you use to measure light intensity? | Light meter
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| What would you use to measure temperature? | Thermometer
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| What would you use to measure the moisture or pH of the soil? | Moisture or pH meter
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| What could an error be when measuring light intensity? | Casting a shadow over the light meter
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| What could an error be when measuring the moisture or pH of the soil? | Not wiping the probe between each use
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