Problem: OPTIONS:
- object
- air
- vacuum
- space
Q: Q: What is beyond the atmosphere? A:
Answer: space
Problem: OPTIONS:
- active respiration
- growth rate
- sensitive immunity
- active immunity
Q: Q: Introduction of antigens into the body through immunization can confer what benefit? A:
Answer: active immunity
Problem: OPTIONS:
- reactor
- magnet
- generator
- battery
Q: Q: What device is an electrochemical cell or series of cells that produces an electric current? A:
Answer:
battery