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Questions and Answers
Which of the following is a common element in the Earth's crust?
Which of the following is a common element in the Earth's crust?
- Gold
- Silver
- Helium
- Oxygen (correct)
What is the process by which plants use sunlight to synthesize foods with the help of chlorophyll?
What is the process by which plants use sunlight to synthesize foods with the help of chlorophyll?
- Oxidation
- Respiration
- Fermentation
- Photosynthesis (correct)
Which of the following is a primary function of the human respiratory system?
Which of the following is a primary function of the human respiratory system?
- Nutrient absorption
- Waste elimination
- Gas exchange (correct)
- Hormone production
