Q: Fact 1: Behaviors can be learned through play. Fact 2: Everyone can have fun and play together. Given the two facts above, what can behaviors be? | OPTIONS:
- dangerous
- positive
- movement
- protect them
- harmful substances
- smoking cigarettes
- Fun to learn
- mechanical
A: Fun to learn

Q: Fact 1: Burning fossil fuels increases the carbon in the atmosphere. Fact 2: More carbon in the atmosphere means atmospheric warming. Given the two facts above, what increases when fossil fuels are burned? | OPTIONS:
- Greenhouse gasses
- Greenhouse gases
- cancer
- wood ash
- atmospheric warming
- coal
- heat energy
- Temperature
A: atmospheric warming

Q: Fact 1: Ethologists usually study how animals behave in their natural environment. Fact 2: Ethologists are scientists who study animals in their natural habitats. Given the two facts above, what do scientists study? | OPTIONS:
- solid, liquid, gas
- microorganisms
- electromagnetic energy
- animal behavior
- biological diversity
- an object
- an organism's body
- metabolic reaction
A: animal behavior

Q: Fact 1: Skin is used for breathing air by frogs. Fact 2: An apathetic frog is probably a sick frog. Given the two facts above, what largest organ can cause sickness? ? | OPTIONS:
- Heart
- lungs
- immune
- germs
- mold
- Skin
- Liver
- Stomach
A: Skin