Fact 1: Flatworms belong to the phylum Platyhelminthes. Fact 2: Flatworms Flatworms or Platyhelminthes include flukes, tapeworms, and turbellarians. Given the two facts above, flukes, tapeworms, and turbell are?

OPTIONS:
- major threat to health
- types of flat leeches
- Plant growth is reduced
- types of earthworms
- competing for resources
- types of snakes
- types of flatworms
- parasites

Answer: types of flatworms

Fact 1: Electricity sometimes is used for heating buildings. Fact 2: Most electricity is created with a turbine generator. Given the two facts above, what are most buildings heated with?

OPTIONS:
- a hydraulic system
- electromagnetic energy
- compound of hydrogen oxygen
- Movement of an air mass
- cellulose
- turbine generators
- lowered energy cost
- direct energy

Answer: turbine generators

Fact 1: Most carcinogens cause cancer by producing mutations in DNA. Fact 2: Jet fuels are carcinogens. Given the two facts above, what can cause cancer by producing mutations in DNA?

OPTIONS:
- A drug.
- Pesticides
- cigarettes
- A computer
- Toxicity
- jet fuel
- copper
- PDAs

Answer: jet fuel

Fact 1: Gravity causes objects that have mass to be pulled down on a planet. Fact 2: Planet Mars Mars is the fourth planet from the sun and is most like Earth. Given the two facts above, where does gravity cause objects that have mass to be pulled down to?

OPTIONS:
- rocks
- Large.
- meters
- matter
- Mars
- oceans
- feet
- ground

Answer:
Mars