Q: Fact 1: Clouds are formed by water vapor rising into colder regions of the atmosphere and condensing. Fact 2: Steam is water vapor produced by evaporation. Given the two facts above, clouds are formed by what going to colder regions? | OPTIONS:
- Movement of an air mass
- Something that evaporated
- Something that melted
- cloudy and rainy weather
- Something that stayed the same
- Something that froze
- precipitation
- air mass over Earth's surface
A: Something that evaporated

Q: Fact 1: Most amphibians breathe with gills as larvae and with lungs as adults. Fact 2: All frogs are amphibians. Given the two facts above, an example of organisms that breathes with gills as larvae and with lungs as adults are? | OPTIONS:
- mollusk
- salmon
- a fish
- harmful
- reptile
- amoeba
- frogs
- arachnid
A: frogs

Q: Fact 1: Humans have collected and grown mushrooms for food for thousands of years. Fact 2: Foods rich in chlorine are mushrooms, parsley, sweet potato, rhubarb, and especially tomato. Given the two facts above, humans have collected and grown foods rich in what for thousands of years? | OPTIONS:
- glucose
- bacteria
- ferns
- chlorine
- acetic acid
- Energy.
- heat energy
- Energy
A: chlorine

Q: Fact 1: Biofuel is used to produce electricity by burning. Fact 2: Any green plant can be considered for use in the production of biofuel or bioenergy. Given the two facts above, what can a plant be used to produce when it's burned? | OPTIONS:
- toxins
- energy
- sun's heat
- carbon dioxide
- kinetic energy
- heat energy
- adding heat
- Electricity
A: Electricity