Athick mass of tough roots called loess kept the fertile soil of the prairies in place and held on to moisture.

select the best answer from the choices provided

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What are the four basic classes of organic molecules how do they differ structurally and functionally

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.

How does photosynthesis show the conservation of mass and energy?