Fact 1: Ultraviolet light causes sunburn. Fact 2: Sunburn symptoms are skin redness and pain, possible swelling, blisters, fever, headaches. Given the two facts above, what does ultraviolet light cause?
OPTIONS:
- purple haze
- Something whose growth is discouraged by heavy wet soils
- Something that can be converted to kinetic and heat energy by a motor
- freezing
- skin redness and pain, possible swelling, blisters, fever, headaches
- water vapor rising into colder regions of the atmosphere and condensing
- loud sounds
- Something that take eight minutes to travel to the Earth

Answer: skin redness and pain, possible swelling, blisters, fever, headaches

Fact 1: Hormones control many cell activities, so they are very important for homeostasis. Fact 2: Growth hormone is an important hormone that declines with aging. Given the two facts above, what affects cell aging?
OPTIONS:
- hormones
- radiation
- Smoking
- fat
- acid
- temperature
- cigarettes
- weather

Answer: hormones

Fact 1: Echinoderms use pheromones to communicate with each other. Fact 2: All echinoderms are deuterostomes . Given the two facts above, at least some deuterostomes use pheromones to do what?
OPTIONS:
- attack prey
- seed dispersal
- share properties
- deuterostome with each other
- not communicate
- Release energy
- mate with females
- communicate with each other

Answer:
communicate with each other