Problem: OPTIONS:
- life cycle
- air cycle
- cold cycle
- water cycle
Q: Q: Precipitation, evaporation, transpiration, and condensation are part of what cycle? A:
Answer: water cycle

Problem:OPTIONS:
- water quality
- all of the above
- natural events
- human activity

Q: What has a bigger impact on water quality, natural events or human activity? A:
****
A: human activity

Q: Skeletal muscles must work in pairs to move bones back and forth at a joint because they can only do what? A:
OPTIONS:
- vibrate
- pull
- expand
- contract
contract

Q: Which part of the axon has a higher membrane potential? A:
OPTIONS:
- muscular hillock
- biofilm hillock
- canals hillock
- axon hillock

Answer: axon hillock

Question: Q: How many pairs of legs does a millipede have per body segment? A:
OPTIONS:
- eight
- one
- four
- two
Answer: two

input: OPTIONS:
- the center
- the base
- the apex
- focus Now, answer this question: Q: Convex lenses are thicker in the middle than at the edges so they cause rays of light to converge, or meet, at a point called what? A:
A:
output:
focus