input: OPTIONS:
- visible energy flow
- coolant energy flow
- spectral energy flow
- thermal energy flow Now, answer this question: Q: A refrigerator must do work to reverse the normal direction of what? A:
A:
output: thermal energy flow

Q: From what do tubeworms found deep in the galapagos rift get their energy from? A:

OPTIONS:
- chemosynthetic plants
- chemosynthetic fish
- chemosynthetic viruses
- chemosynthetic bacteria

Answer: chemosynthetic bacteria

Problem: OPTIONS:
- light
- radiation
- cold
- electricity
Q: Q: Transition metals are superior conductors of heat as well as what else? A:
Answer: electricity

Problem:OPTIONS:
- radioactivity
- acids or bases
- different types of liquids
- different types of bacteria

Q: What is a gram stain used to identify ? A:
****
A: different types of bacteria

Q: The heart, blood vessels, and blood make up which system in the body? A:
OPTIONS:
- digestive
- pulminary
- respiratory
- cardiovascular
cardiovascular

Q: What are broad explanations that are widely accepted as true? A:
OPTIONS:
- scientific experiments
- informal theories
- scientific hypotheses
- scientific theories

Answer:
scientific theories