Question 241
Which environmental factor is most directly responsible for acid rain formation?Environmental studiesEnvironmental studiesmedium
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NSC Life Sciences – South Africa
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Question 242
Which structure in the human reproductive system produces sperm?ReproductionReproductionmedium
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Question 243
Which of the following is an example of a density-dependent factor affecting population size?EcologyEcologyhard
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Question 244
What hormone is primarily responsible for the development of secondary sexual characteristics in males during puberty?Human physiologyHuman physiologymedium
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Question 245
Which statement best supports the theory of evolution by natural selection?EvolutionEvolutioneasy
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Question 246
In human physiology, which organ is primarily responsible for regulating blood glucose levels?Human physiologyHuman physiologymedium
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Question 247
What is the main consequence of deforestation on local ecosystems?Environmental studiesEnvironmental studiesmedium
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Question 248
In the context of evolution, what does the term 'fitness' mean?EvolutionEvolutionhard
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Question 249
Which blood vessels carry oxygenated blood away from the heart?Human physiologyHuman physiologyeasy
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Question 250
Which of the following best explains the role of decomposers in an ecosystem?EcologyEcologyhard
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