*Question*
Answer the following question given this paragraph: Many samples have a lot of variation in measurements. Variation can be described with a statistic called the range. The range is the total spread of values in a sample. It is calculated by subtracting the smallest value from the largest value. Q: What term is used to describe the total spread of values in a sample? Choices: - variety - axis - scale - range A:
**Answer**
range

*Question*
Answer the following question given this paragraph: Almost all plants make food by photosynthesis. Q: Almost all plants make food through what process? Choices: - glycolysis - evolution - hydrolysis - photosynthesis A:
**Answer**
photosynthesis

*Question*
Answer the following question given this paragraph: Roots are important organs in all vascular plants. Most vascular plants have two types of roots: primary roots that grow downward and secondary roots that branch out to the side. Together, all the roots of a plant make up a root system . Q: In vascular plants, do primary roots grow downward or to the side? Choices: - to the side - neither - it depends - downward A:
**Answer**
downward

*Question*
Answer the following question given this paragraph: Since the early 1990s, astronomers have discovered other solar systems. A solar system has one or more planets orbiting one or more stars. We call these planets "extrasolar planets," or exoplanets . They are called exoplanets because they orbit a star other than the Sun. As of April 2014, more than 4,600 exoplanets have been found, with 1706 confirmed. The rate of discovery is increasing rapidly! You can check out how many we have found at http://planetquest. jpl. nasa. gov/ . Q: What do you call a system that has one or more planets orbiting one or more stars? Choices: - galaxy - atom - molecular system - solar system A:
**Answer**
solar system