Problem: 
Q: Q: What is the name of the process by which plants use energy from sunlight to synthesize carbohydrates?   A:
Answer: photosynthesis
Problem: 
Q: Q: The magnet field of earth is called what?   A:
Answer: magnetosphere
Problem: 
Q: Q: What is the most significant cause of respiratory disease as well as cardiovascular disease and cancer?   A:
Answer:
smoking