Fact 1: If an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity. Fact 2: Specific gravity is related to density. Given the two facts above, this determines whether an object will sink or float:?

OPTIONS:
- density
- displacement
- energy
- sun's heat
- phase
- heat
- swim
- forces

Answer: density

Fact 1: Lung cancer is most often caused by exposure to tobacco smoke. Fact 2: Lung cancer is the Godzilla of cancers. Given the two facts above, the godzilla of cancers is most often caused by exposure to what?

OPTIONS:
- rays or beams
- fossil fuels
- Pollution
- tobacco smoke
- light energy
- Chemical energy
- high temperature
- harmful substances

Answer: tobacco smoke

Fact 1: Vertebrate chordates have a backbone. Fact 2: Yep, lizards are chordates, just like humans. Given the two facts above, what has a backbone like a human?

OPTIONS:
- a fish
- mammals
- Lizards
- crocodiles
- Squids
- fur seals
- Bees
- Flowers

Answer: Lizards

Fact 1: Flatworms belong to the phylum Platyhelminthes. Fact 2: Parasitic flatworms have evolved a close association with their hosts. Given the two facts above, organisms belonging to the phylum Platyhelminthes have evolved a close association with their what?

OPTIONS:
- ovaries
- Wasps
- life
- plant
- orchids
- hosts
- root system
- tree host

Answer:
hosts