Fact 1: Freshwater biomes have water that contains little or no salt. Fact 2: Freshwater biomes have suffered mainly from pollution. Given the two facts above, biomes that have suffered mainly from pollution have water that contains little or no what?

OPTIONS:
- Toxins
- CO 2
- liquid
- salt
- Lead
- Carbon
- Acids
- sulfur

Answer: salt

Fact 1: Vertebrate chordates have a backbone. Fact 2: Invertebrates have no vertebrae or backbone. Given the two facts above, what kind of animal is classified as having a vertebrae?

OPTIONS:
- it keeps an organism warm
- invertebrate
- vertebrate chordate
- gastropod shells
- the body's largest organ
- remains of prehistoric life
- hard boned animals
- roundworm

Answer: vertebrate chordate

Fact 1: An earthquake causes the ground to shake. Fact 2: Earthquakes are caused by movement of the tectonic plates. Given the two facts above, the ground shakes as a result of the movement of what?

OPTIONS:
- Earth's core
- Electrical energy
- tectonic plates
- kinetic energy
- vehicles
- electromagnetic energy
- earth
- magnetics

Answer: tectonic plates

Fact 1: If a habitat can no longer support animals then those animals will move to another area. Fact 2: Animals are dependent on plants for food and habitat. Given the two facts above, what needs to be lacking for a creature to change habitat?

OPTIONS:
- warmth
- inedible plants
- wind
- oxygen
- nektar
- food
- O2
- dirt

Answer:
food