Which best describes how sediment forms loose material is cemented together
chemical changes cause sediment to compact together.
erosion breaks down rocks and other materials
molten rocks cooled above earth's surface

hi

Explanation:

b.transmitters send radio waves, and receivers capture radio waves.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.