*Question*: Although change in multicellular species usually takes thousands of years, some species of bacteria undergo major changes in just a few years. One reason for this difference is that these bacteria OPTIONS:
- are microscopic
- do not contain DNA
- reproduce very quickly
- cause infectious diseases
*Answer*: reproduce very quickly

*Question*: An Italian scientist named Alessandro Volta invented the Voltaic pile in 1800. It was able to produce a steady electrical current. Based on this description, what is the modern equivalent of the Voltaic pile? OPTIONS:
- a wire
- a battery
- a resistor
- a light bulb
*Answer*: a battery

*Question*: Many areas of Massachusetts have small deep ponds called kettle ponds. Which of the following best explains the formation of these ponds? OPTIONS:
- avalanche
- wind erosion
- glacial depression
- sediment deposition
*Answer*:
glacial depression