Q: Fact 1: Adelta is formed by deposition of sediment at the mouth of a river by water fanning out. Fact 2: Rivers provide a water supply. Given the two facts above, what is formed by deposition of sediment at the mouth of a water supply fanning out? | OPTIONS:
- a hurricane
- soils
- a delta
- an ocean
- soft soil
- an island
- detritus
- spring
A: a delta

Q: Fact 1: An earthquake causes the ground to shake. Fact 2: Seismometers measure earthquakes. Given the two facts above, what measures the shaking of the ground? | OPTIONS:
- Seismometer
- sensory neurons
- Hygrometer
- Speedometer
- heat energy
- kinetic energy
- Force gauge
- power stations
A: Seismometer

Q: Fact 1: Fish have a centralized nervous system with a brain. Fact 2: All fish are creatures that swim. Given the two facts above, what that can swim have a centralized nervous system with a brain? | OPTIONS:
- ships
- humans
- ducks
- creatures
- animals
- water
- boats
- fur seals
A: creatures

Q: Fact 1: Decomposition increases amount of organic matter in soil. Fact 2: Composting is simply the natural decomposition of organic matter. Given the two facts above, what increases the amount of organic matter in soil? | OPTIONS:
- raining
- shedding
- mussels
- raking
- herbicide
- fossil fuels
- green manures
- composting
A: composting