input: OPTIONS:
- in to out
- left to right
- low to high
- high to low Now, answer this question: Q: How does air always flow? A:
A:
output: high to low

Q: What happens to the energy levels of electrons as they are closer to the nucleus? A:

OPTIONS:
- they are higher
- they balance
- they divide
- they are lower

Answer: they are lower

Problem: OPTIONS:
- gas
- plasma
- theoretical
- biochemical
Q: Q: Normal body temperature is ideal for most of what type of reactions? A:
Answer: biochemical

Problem:OPTIONS:
- insects
- mammals
- dinosaurs
- aquatic

Q: The earliest animals were which kind of invertebrates? A:
****
A: aquatic

Q: Foresters commonly inoculate pine seedlings with a type of what to promote growth? A:
OPTIONS:
- yeast
- soil
- proteins
- fungi
fungi

Q: What is the initial stage of scienetific investigations? A:
OPTIONS:
- asking questions
- forming hypothesis
- making predictions
- observation

Answer:
observation