input: OPTIONS:
- staggered line
- curved line
- fragmented line
- straight line Now, answer this question: Q: The direction of the force of gravity is in what direction? A:
A:
output: straight line

input: OPTIONS:
- energy
- cost
- matter
- charge Now, answer this question: Q: Electrons move, but they aren't destroyed. this is the law of conservation of what? A:
A:
output: charge

input: OPTIONS:
- proteins
- hormones
- carbohydrates
- enzymes Now, answer this question: Q: What can be used to speed up biochemical reactions? A:
A:
output:
enzymes