input with options: Fact 1: Sound can be used for communication by animals. Fact 2: Sound Sound waves are mechanical waves. Given the two facts above, what can be used for communication by animals?
OPTIONS:
- books
- Electrical energy
- electromagnetic energy
- nails
- chemical messengers
- mechanical waves
- encoded information
- ice
output: mechanical waves

Q: Fact 1: Viruses often infect bacteria. Fact 2: Bacteria are prokaryotes because they lack a clearly defined nucleus and sub-cellular organelles. Given the two facts above, what do viruses often infect?

OPTIONS:
- prokaryotes
- mammals
- dead h2o particles
- volume
- insects
- A computer
- the skin
- clouds

A: prokaryotes

input: OPTIONS:
- salt changes into other things
- flow of electrons
- water is evaporated
- water freezes
- salt is evaporated
- prolactin release
- Plant growth is reduced
- looseness of dirt or compost Now, answer this question: Fact 1: Heating salt water causes the water to evaporate while the salt remains. Fact 2: On high heat, bring to a boil. Given the two facts above, what happens when salt water is boiled?
A:
output: water is evaporated

Fact 1: Hormones control many cell activities, so they are very important for homeostasis. Fact 2: Homeostasis is the chemical equilibrium of the body. Given the two facts above, hormones control many cell activities and are important to what?

OPTIONS:
- h2o
- an organism's body
- weather
- increases a body's strength
- production of energy
- Transfers energy
- maintaining density
- chemical equilibrium of body

Answer: chemical equilibrium of body

Problem: OPTIONS:
- fish
- graptolites
- starfish
- waste
- humans
- barnacles
- insects
- ferns
Q: Fact 1: Echinoderms lack respiratory and excretory systems. Fact 2: Starfish and sea urchins are also echinoderms. Given the two facts above, what lack respiratory and excretory systems?
Answer: starfish

Fact 1: Plants respond to daily and seasonal cycles and to disease. Fact 2: Temperature follows a seasonal cycle. Given the two facts above, what do plants respond to?

OPTIONS:
- Energy.
- heat produced
- Chemical energy
- sun's heat
- the environment
- heat energy
- Sulfur dioxide
- temperature

Answer:
temperature