Turn around and look behind them.
Marine waters cover 70.8% of the earth’s surface. And, if we substract the 5.5% area of the continental shelf, 65.3% of the earth’s surface is occupied by continental slope and rise, and deep-sea parts (data after Dietrich and Kalle 1957). The deep sea can be subdivided into several topographical units. There are deep-sea grabens<span> (15 in number), which cut deeper than 6,000 m. Deep-sea grabens are restricted to tectonic active regions near the foot of continental slopes.</span>
Answer:
If lava cools slowly and does not move too fast it forms smooth ropy lava called pahoehoe.
However, if it cools quickly and moves fast it can tear into clinkery pieces called a'a
Answer:
various minerals like Olivine, Pyroxene, Amphibole, Biotite, Feldspars, Quartz and many more. Plus it also contains some volatiles and trapped gases .
Explanation:
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