Seismic waves that cause rocks to move in the same direction as the waves. ( 7 letter word)

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Explanation:

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Primary Waves Seismic wave that squeezes and pulls rocks in the same direction that the wave travels, causing rock particles to move back and forth. Seconday Waves

Explanation:

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects

the fossil record provides evidence of a common ancestor to many species.