Fact 1: Heating salt water causes the water to evaporate while the salt remains. Fact 2: An increase in temperature is the result of the flow of heat into the system. Given the two facts above, what can be done to salt water to cause water to evaporate while salt remains?
OPTIONS:
- freezing the salt
- adding more water
- DNA damage and mutations
- lowering the temperature
- cools it down
- exposure to cold
- fissures of hot, acidic water
- increasing the temperature
increasing the temperature

Fact 1: Irradiating food can be used to kill existing microorganisms in the food. Fact 2: How Irradiation Works Food is irradiated using radioactive gamma ray sources, usually radioactive cobalt-60 or . Given the two facts above, using radioactive gamma ray sources, existing microorganisms in food can be what?
OPTIONS:
- killed
- cancer
- organisms
- tiny
- dangerous
- extended
- colored
- resized

Answer: killed

Question: Fact 1: Apan is used for cooking food by heating food in it on a stove. Fact 2: Healthful Meals Eat a grain food at every meal . Given the two facts above, where does a pan usually heat meals?
OPTIONS:
- started
- Winter
- homes
- made
- Sun
- oil
- cooled
- stove
Answer: stove

input with options: Fact 1: HIV infects and destroys helper T cells. Fact 2: Because HIV attacks T cells, it essentially paralyzes the immune system. Given the two facts above, what system does HIV attack?
OPTIONS:
- complex
- humans
- infection
- organ
- brain
- animals
- spinal
- immune
output: immune

Q: Fact 1: Behaviors that improve fitness increase through natural selection. Fact 2: Adaptation is the result of natural selection. Given the two facts above, behaviors that improve fitness increase through what?

OPTIONS:
- evolving
- relocating
- absorbing
- competition
- Riding a bike
- Animal survival
- kinetic energy
- adaptation

A: adaptation

Fact 1: Competition may cause animals to fight towards members of their own species. Fact 2: Competition is fierce and resources are scarce. Given the two facts above, what may cause animals to fight towards members of their own species?
OPTIONS:
- energy of moving objects
- lots of mates
- deforestation
- food and shelter
- scarce resources
- abundant resources
- lots of resources
- threatened
scarce resources