Biology Option G Review for Exam

Bio1. Explain the significance of the principle of competitive exclusion.
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(Total 3 marks)

2. no two species can coexist in same niche; one is displaced / one survives; one species has an advantage over competitor / species compete with each other; description of (Gause’s) experiments with Paramecium;
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3. Outline the biological consequences of releasing raw sewage into a river.
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