Use information from the paragraph to answer the question.  Question:   John's town used to have lots of water, back when there were only a few hundred people. However, now that the town holds several thousand people, the water availability is scarce or plentiful?    Paragraph :  Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.
scarce

Use information from the paragraph to answer the question.  Question:   We need oxygen masks when we climb Everest because the air pressure is low or high?    Paragraph :  Air pressure is less at higher elevations.
low

Use information from the paragraph to answer the question.  Question:   A very dense medium will cause light to move faster or slower?    Paragraph :  The more dense the medium, the slower the light moves.
