Q: What is the basic structure that holds plants upright, allowing plants to get the sunlight and air they need? A:

OPTIONS:
- twig
- stamen
- root
- stem

Answer: stem

Problem: OPTIONS:
- arthritis
- headache
- sunburn
- heartburn
Q: Q: What is a common condition caused by stomach acid? A:
Answer: heartburn

Problem:OPTIONS:
- separated
- changed
- hypothesized
- directly observed

Q: The quarks in a particle are confined, meaning individual quarks cannot be what? A:
****
A: directly observed

Q: What property of certain states of matter can be given in units of millimeters of mercury? A:
OPTIONS:
- solvency
- gravity
- velocity
- pressure
pressure

Q: By breaking down organic matter, roundworms play an important role in which cycle? A:
OPTIONS:
- water cycle
- metamorphic cycle
- circadian cycle
- carbon cycle

Answer: carbon cycle

input with options: Q: Which cycle tracks the flow of nitrogen through an ecosystem? A:
OPTIONS:
- nitrogen reaction
- water cycle
- life cycle
- nitrogen cycle
output:
nitrogen cycle