input: OPTIONS:
- mammals
- hormones
- density
- trees
- seasons
- colors
- h2o
- gravity Now, answer this question: Fact 1: Hormones are chemical messengers that control many body functions. Fact 2: Body functions are interrelated. Given the two facts above, what are interrelated?
A:
output: hormones

input: OPTIONS:
- invasive species
- water
- insects
- food
- tornadoes
- recycling
- plants
- scientists Now, answer this question: Fact 1: Most ecosystems get energy from sunlight. Fact 2: Sunlight is turned into energy by plants. Given the two facts above, most ecosystems need what?
A:
output: plants

input: OPTIONS:
- Bend
- strength
- exercise
- ligt
- It expands
- shorten
- Vibrates
- stay warm Now, answer this question: Fact 1: Muscle contraction occurs when muscle fibers get shorter. Fact 2: Movement is based on the contraction of muscles. Given the two facts above, what do muscle fibers need to do to enable movement?
A:
output:
shorten