Problem: OPTIONS:
- distortion
- absorption
- dispose
- diffraction
Q: Q: Three ways that waves may interact with matter are reflection, refraction, and what? A:
Answer: diffraction

Problem:OPTIONS:
- remove heat
- hold heat
- decrease heat
- release heat

Q: What happens when chemical bonds in a burning log break? A:
****
A: release heat

Q: What is the term for electric current that keeps reversing direction? A:
OPTIONS:
- direct current
- AC/DC
- magnetic current
- alternating current
alternating current

Q: Extended stays in zero gravity are not healthy for human beings. thus, for the comfort of the astronauts, the station is rotated so that the astronauts feel there is what? A:
OPTIONS:
- revealed gravity
- still gravity
- Fixed Gravity
- internal gravity

Answer: internal gravity

Question: Q: What is the hypothesis that states that the biosphere is its own living organism? A:
OPTIONS:
- Big Bang theory
- Geiger theory
- Pascal's hypothesis
- gaia hypothesis
Answer: gaia hypothesis

input: OPTIONS:
- nervous
- digestive
- cardiovascular
- endocrine Now, answer this question: Q: Some hormones produced by the anterior pituitary regulate the production of hormones by other tissues belonging to what system? A:
A:
output:
endocrine