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Looking for MCQs? You're in the right place! Whether you're preparing for competitive exams, school boards or just aiming to improve your knowledge, we offer MCQs for all levels and subjects.
Answer: Carbohydrates
Carbohydrates are the bodys primary source of energy, providing fuel for cells.
Answer: Carry oxygen
The circulatory system transports oxygen, nutrients and waste products throughout the body.
Answer: Oxygen
Oxygen is a non-metal and is a vital component of the Earths atmosphere and living organisms.
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Answer: Jupiter
Jupiter is the largest planet in the solar system, with a diameter of about 139,820 km.
Answer: Oxygen
Oxygen is the most abundant element in Earths crust, making up about 46% of the Earths composition.
Answer: Medulla oblongata
The medulla oblongata controls vital functions such as heart rate, breathing and blood pressure.
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Answer: CO2
Carbon dioxide consists of one carbon atom and two oxygen atoms, with the molecular formula CO2.
Answer: Exchange gases
The respiratory system allows the body to take in oxygen and expel carbon dioxide through breathing.
Answer: Light wave
Light waves are a type of electromagnetic wave, part of the spectrum that also includes radio, microwaves and X-rays.
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Answer: H2O
Water consists of two hydrogen atoms and one oxygen atom, forming the compound H2O.
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