*Question*
Answer the following question given this paragraph: The mass spectrometer measures the percent abundance of different isotopes in a given sample. Q: He mass spectrometer measures the percent abundance of different what? Choices: - reactions - organisms - Proteins - isotopes A:
**Answer**
isotopes

*Question*
Answer the following question given this paragraph: One such strategy is to allow the wind to carry the seeds. With special adaptations in the seeds, the seeds can be carried long distances by the wind. For example, you might have noticed how the "fluff" of a dandelion moves in the wind. Each piece of fluff carries a seed to a new location. If you look under the scales of pine cone, you will see tiny seeds with "wings" that allow these seeds to be carried away by the wind. Maple trees also have specialized fruits with wing-like parts that help seed dispersal ( Figure below ). Q: Why are seeds of a pine cone easily carried by the wind and dispersed? Choices: - seeds are sticky - seeds are small - seeds are dense - seeds have wings A:
**Answer**
seeds have wings

*Question*
Answer the following question given this paragraph: Sexual reproduction results in offspring that are genetically unique. They differ from both parents and also from each other. This occurs for a number of reasons. Q: What type of reproduction results in genetically unique offspring? Choices: - mitosis - asexual reproduction - internal reproduction - sexual reproduction A:
**Answer**
sexual reproduction

*Question*
Answer the following question given this paragraph: Sound waves are mechanical waves, and mechanical waves can only travel through matter. The matter through which the waves travel is called the medium (plural, media). The Table below gives the speed of sound in several different media. Generally, sound waves travel most quickly through solids, followed by liquids, and then by gases. Particles of matter are closest together in solids and farthest apart in gases. When particles are closer together, they can more quickly pass the energy of vibrations to nearby particles. You can explore the speed of sound in different media at this URL:. Q: What is the matter through which sound waves travel? Choices: - dust - mass - air - medium A:
**Answer**
medium