Q: How many valence electrons does a sodium atom have ? A:
OPTIONS:
- three
- six
- two
- one

Answer: one

Question: Q: What helps cells take up glucose from the blood? A:
OPTIONS:
- oxygen
- hemoglobin
- estrogen
- insulin
Answer: insulin

input with options: Q: What causes eutrophication to occur? A:
OPTIONS:
- excess of decreased and other nutrients
- excess of carbonate and other nutrients
- excess of increased and other nutrients
- excess of fertilizers and other nutrients
output: excess of fertilizers and other nutrients

Q: Q: What is the term for a mountain-building event? A:

OPTIONS:
- glaciation
- volcanism
- erosion
- orogeny

A: orogeny

input: OPTIONS:
- to feed their offspring
- to store food
- for protection against predators
- to reach the nectar at the bottom of flowers Now, answer this question: Q: Why do hummingbirds have long narrow bills? A:
A:
output: to reach the nectar at the bottom of flowers

Question: Q: What are atoms or groups of atoms called which carry and electrical charge? A:
OPTIONS:
- protons
- molecules
- electrons
- ions
Answer:
ions