input with options: Q: What is given off from plants and taken in by animals? A:
OPTIONS:
- methane
- sulfur
- nitrogen
- oxygen
output: oxygen

Q: Q: Although they look like big rocks, what structures that serve as habitats for many different types of ocean life are actually alive? A:

OPTIONS:
- new forming reefs
- natural reefs
- southern reefs
- coral reefs

A: coral reefs

input: OPTIONS:
- anus
- oral cavity
- urethra
- cloaca Now, answer this question: Q: An external opening in the what of amphibians allows wastes and gametes to exit the body? A:
A:
output: cloaca

Q: The job of the nucleolus is to build what? A:

OPTIONS:
- chromosomes
- electrons
- cells
- ribosomes

Answer: ribosomes

Problem: OPTIONS:
- reaction circle
- mechanical mechanism
- basic reaction
- reaction mechanism
Q: Q: What is the sequence of elementary steps that together comprise an entire chemical reaction called? A:
Answer: reaction mechanism

Q: What instrument, with a digital readout, is used by scientists to measure very small masses? A:

OPTIONS:
- mixed balance
- mechanical balance
- common balance
- electronic balance

Answer:
electronic balance