Q: Huge calderas form when the mountain above an empty chamber of what collapses? A:
OPTIONS:
- gas
- mercury
- coal
- magma
magma

Q: What do all chemical reactions need to get started? A:
OPTIONS:
- expression energy
- kinetic energy
- potential energy
- activation energy

Answer: activation energy

Question: Q: What are plant-like protists called? A:
OPTIONS:
- fungi
- sponge
- spores
- algae
Answer: algae

input with options: Q: The number of possible isomers increases tremendously as carbon skeletons increase in what? A:
OPTIONS:
- variation
- mass
- weight
- size
output: size

Q: Q: What system of the body is generally responsible for breathing? A:

OPTIONS:
- excretory
- integumentary
- cardiac
- respiratory system

A: respiratory system

Q: What is the measure of how closely molecules are packed together? A:
OPTIONS:
- length
- volume
- frequency
- density
density