Fault-block mountains form when Earth's crust pushes material up and down near a fault line.<span> Rocks that get pushed upward eventually form mountains if there is enough seismic activity. The higher part of a fault-block area is called a horst, while the lower part is called a graben, according to Ducksters.
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1. <span>C) monosaccharide
2. </span><span>A) uracil (U)
3. </span><span>B) polysaccharide
4. </span><span>A) phospholipids
5. </span><span>C)Their shapes fit snugly together</span>
