Problem: OPTIONS:
- valleys
- oceans
- plains
- mountains
Q: Q: Where do streams often start? A:
Answer: mountains

Problem:OPTIONS:
- viruses
- protozoa
- amoeba
- bacteria

Q: What are surrounded by a cell wall consisting of peptidoglycan? A:
****
A: bacteria

Q: Plastics are common examples of synthetic polymers of what abundant element? A:
OPTIONS:
- silver
- silicon
- hydrogen
- carbon
carbon

Q: In an atom, what two major types of particles are located in the nucleus? A:
OPTIONS:
- electrons and neutrons
- molecules and neutrons
- ions and electrons
- protons and neutrons

Answer: protons and neutrons

Question: Q: What works by providing a lower energy pathway from reactants to products? A:
OPTIONS:
- thermodynamics
- hormones
- magnetism
- catalyst
Answer: catalyst

input: OPTIONS:
- oblong
- simple
- vertical
- irregular Now, answer this question: Q: Galaxies can be spiral, elliptical, or which other type? A:
A:
output:
irregular