Fact 1: Animals may compete for territory, water, food, or mates. Fact 2: Wild animals are habitual creatures. Given the two facts above, what may compete for territory, water, food, or mates?

OPTIONS:
- fjords
- By wind and rain
- habitual creatures
- parasites
- movement of tectonic plates
- waterways
- small stones
- passenger pigeons

Answer: habitual creatures

Fact 1: An incandescent light bulb converts electricity into light by sending electricity through a filament. Fact 2: Fiber optics works by carrying light along hair-thin filaments of glass. Given the two facts above, an incandescent light bulb converts electricity into light by sending electricity through what?

OPTIONS:
- hair-thin molecules
- hair-thin spokes
- epidermis and dermis
- hydrogen and oxygen
- activation energy
- an electron lens
- hair-thin hairs
- hair-thin fibers of glass

Answer: hair-thin fibers of glass

Fact 1: Microscope is used to see small things by biologists by making them appear bigger. Fact 2: Microscopes and telescopes both use lenses. Given the two facts above, what are used to see small things by biologists to make them appear bigger?

OPTIONS:
- mirrors
- DNA
- the sun
- photons
- an image
- h2o
- lenses
- density

Answer: lenses

Fact 1: Scales are used for protection by scaled animals. Fact 2: Fish are covered with scales. Given the two facts above, what are covered with protection?

OPTIONS:
- apples
- trees
- coral
- clams
- roses
- wings
- hats
- fish

Answer:
fish