Prep Africa

NSC Life SciencesSouth Africa

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Question 221

Which part of the human body is primarily responsible for filtering blood to form urine?
Human physiologyExcretory Systemeasy

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Question 222

Which environmental problem is caused primarily by excessive release of greenhouse gases?
Environmental studiesHuman Impact on Environmentmedium

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Question 223

During sexual reproduction in humans, what is the purpose of meiosis?
ReproductionCell Division and Gamete Formationmedium

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Question 224

Which of the following best explains why genetic mutations can be important for evolution?
DNA and geneticsGenetic Variationmedium

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Question 225

How does the human circulatory system maintain homeostasis?
Human physiologyCirculatory Systemmedium

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Question 226

Which factor most directly influences a population's ability to adapt to environmental changes?
EvolutionPopulation Geneticshard

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Question 227

Which ecological principle explains why invasive species can disrupt native ecosystems?
EcologyHuman Impact on Ecosystemshard

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Question 228

Which process leads to the formation of new alleles in a population?
DNA and geneticsDNA and geneticsmedium

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Question 229

What role do producers play in an ecosystem?
EcologyEcologyeasy

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Question 230

Which of the following human body systems is primarily involved in defending against pathogens?
Human physiologyHuman physiologymedium

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