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QUESTIONS |
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| (a) | Many animals mark off the boundaries of their territories with pheromones. | ||
| (i) | Explain what a pheromone is | ||
(2) |
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| (ii) | Give an example of an animal defending its territory in this way. | ||
(1) |
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| (iii) | Suggest two advantages of using pheromones to mark a territory rather than using another form of behaviour? | ||
(3) |
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