Q: Fact 1: Neurons are the structural and functional units of the nervous system. Fact 2: Connections can be made neuron to neuron or neuron to axon. Given the two facts above, what are connected to structural and functional units of the nervous system? | OPTIONS:
- eardrum
- axons
- bacteria
- cilia
- organ
- motors
- skin cells
- nerves
A: axons

Q: Fact 1: Populations of viruses do not grow through cell division because they are not cells. Fact 2: Viruses are parasites of cells. Given the two facts above, populations of viruses do not grow through division because they are what? | OPTIONS:
- reproduce
- homogenous
- negative
- dangerous
- Loose
- parasites
- complex
- fungi
A: parasites

Q: Fact 1: Heavy rains cause flooding. Fact 2: With the rain comes floods, and with the floods come erosion and landslides. Given the two facts above, what can cause erosion and landslides? | OPTIONS:
- condensation
- mines
- mouth of rivers
- heavy rain
- chemical reaction
- vehicles
- electricity
- deforestation
A: heavy rain

Q: Fact 1: Abalance is used for measuring mass of an object. Fact 2: Mass Amount of matter an object contains. Given the two facts above, what can be used to measure the amount of matter an object contains? | OPTIONS:
- Joules
- density
- Protractor
- Thermometer
- energy
- Balance
- Accelerometer
- microscope
A: Balance