Q: Vertebrates are all chordates that have a what? A:
OPTIONS:
- circulatory system
- fossil
- brain
- backbone

Answer: backbone

Question: Q: When a series of measurements is precise but not what, the error is usually systematic? A:
OPTIONS:
- velocity
- length
- color
- accurate
Answer: accurate

input with options: Q: The first consumption of breast milk or formula floods the baby's gastrointestinal tract with what? A:
OPTIONS:
- hemoglobin
- nerves
- enzymes
- beneficial bacteria
output: beneficial bacteria

Q: Q: What isotope of carbon is typically used to date ancient items? A:

OPTIONS:
- uranium 14
- nitrogen 14
- carbon 12
- carbon 14

A: carbon 14

input: OPTIONS:
- particular intermolecular forces
- variable intermolecular forces
- angular intermolecular forces
- uniform intermolecular forces Now, answer this question: Q: Why do crystals have relatively sharp and well-defined melting points? A:
A:
output: uniform intermolecular forces

Question: Q: Name the fever that is caused by a virus that has antigens similar to molecules in human heart tissues. A:
OPTIONS:
- Dengue fever
- yellow fever
- chronic fever
- rheumatic fever
Answer:
rheumatic fever