Q: Fact 1: Coal is used for generating heat by burning. Fact 2: Chemical energy stored in coal is released as heat energy when the coal is burned. Given the two facts above, what does coal release? | OPTIONS:
- heat
- fire
- steam
- carbon
- toxins
- oxygen
- fossil
- smoke
A: heat

Q: Fact 1: Mutation creates new genetic variation in a gene pool. Fact 2: Genetic variation is the raw material for evolution. Given the two facts above, mutation leads to _.? | OPTIONS:
- Devolution
- Plants growth
- rapid expansion
- Evolution.
- Degeneration
- Extinction
- massive damage
- anemia
A: Evolution.

Q: Fact 1: Adoorbell converts electrical energy into sound. Fact 2: Perception of sound Sound is a wave. Given the two facts above, what is created when a doorbell is pressed? | OPTIONS:
- an object
- particles
- heat
- energy
- a wave
- courtship
- aura
- colors
A: a wave

Q: Fact 1: Mollusks are invertebrates such as the common snail. Fact 2: Mollusks are soft-bodied invertebrates. Given the two facts above, what do mollusks have? | OPTIONS:
- aerobic capacity
- Energy
- gastropod shells
- Chemical energy
- a cuticle
- kinetic energy
- soft bodies
- alveoli
A: soft bodies