Question 271
In an ecosystem, which organism is typically the primary producer?EcologyEcologyeasy
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NSC Life Sciences – South Africa
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Question 272
What is the main cause of biodiversity loss in many ecosystems?Environmental studiesEnvironmental studiesmedium
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Question 273
Which hormone regulates the menstrual cycle by maintaining the uterine lining?ReproductionReproductionmedium
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Question 274
Which of the following best explains the concept of genetic drift?EvolutionEvolutionhard
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Question 275
In human physiology, which structure prevents food from entering the trachea during swallowing?Human physiologyHuman physiologymedium
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Question 276
Which of the following is NOT a characteristic of sexual reproduction?ReproductionReproductioneasy
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Question 277
Which human organ is primarily responsible for filtering blood to form urine?Human physiologyExcretory Systemeasy
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Question 278
In an ecosystem, what term describes the role and position a species has?EcologyEcosystem Dynamicsmedium
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Question 279
Which gas primarily contributes to the greenhouse effect and global warming?Environmental studiesHuman Impact on Environmentmedium
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Question 280
What type of reproduction involves only one parent and produces genetically identical offspring?ReproductionModes of Reproductioneasy
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