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Preview questions
1. What is the basic unit of life?
Tissue · Cell · Organ · System
2. Which process involves the exchange of gases in organisms?
Respiration · Digestion · Excretion · Reproduction
3. What is the primary function of the digestive system?
To circulate blood · To break down food · To eliminate waste · To regulate temperature
4. Which organ is primarily responsible for pumping blood?
Lungs · Liver · Heart · Kidneys
5. What is the process of removing waste products from the body called?
Respiration · Excretion · Digestion · Circulation
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