Problem:OPTIONS:
- digestive system
- reproductive system
- respiratory system
- cardiovascular system

Q: What is the closed circulatory system of humans and other vertebrates called? A:
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A: cardiovascular system

Problem:OPTIONS:
- plains
- streams
- shores
- mountains

Q: The converging of continental plates can form what kind of geological feature? A:
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A: mountains

Problem:OPTIONS:
- The minimum parts
- How frequently the parts occur
- The width of the parts
- the maximum parts

Q: Amplitude describes what about the wave's crest and trough? A:
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A: the maximum parts

Problem:OPTIONS:
- hydroxides
- antioxidants
- inhibitors
- antibiotics

Q: Most diseases caused by bacteria can be cured by which medicines? A:
****
A:
antibiotics