input: OPTIONS:
- another carbon change
- another thermal change
- another radioactive change
- another chemical change Now, answer this question: Q: By what kind of change can a chemical change be reversed? A:
A:
output: another chemical change

input: OPTIONS:
- larger
- narrower
- wider
- smaller Now, answer this question: Q: Are vesicles larger or smaller than vacuoles? A:
A:
output: smaller

input: OPTIONS:
- oxygen
- water
- heat
- energy Now, answer this question: Q: All living things require what, which most ecosystems obtain from the sun? A:
A:
output:
energy