Fact 1: Aswitch is used to start the flow of current in an electrical circuit. Fact 2: With switch closed, electricity flows through wires, switch and bulb, to light up the bulb. Given the two facts above, what powers a light bulb?
OPTIONS:
- structure and function
- The tungsten filament
- photosynthetic pigments?
- Unplugging a lamp
- heat production
- heat is produced
- Unscrewing a light bulb
- The flow of electrical current

Answer: The flow of electrical current

Fact 1: Animals use saturated fatty acids to store energy. Fact 2: Animals store excess energy as fat. Given the two facts above, saturated fatty acids are used for:?
OPTIONS:
- exercise
- Reproducing
- solid, liquid, gas
- energy storage
- keeping the dog warm
- oxidation reaction
- an organism's body
- Plants growth

Answer: energy storage

Fact 1: Planting trees has a positive impact on an ecosystem. Fact 2: Some trees are maples. Given the two facts above, what can be planted to have a positive impact on the ecosystem?
OPTIONS:
- maples
- Species
- plants
- soil
- seeds
- animals
- Echinoids
- mushrooms

Answer:
maples