Helens? Why?
Biology, 18.04.2020 02:41 12345678822
What type of succession do you think is displayed in the case of Mount Saint
Helens? Why?
O Primary succession because there is soil left
O Primary succession because the lava wiped away all the soil, leaving bare rock
Secondary succession because there was soil left after the eruption
Answers: 3
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Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary
Answers: 2
What type of succession do you think is displayed in the case of Mount Saint
Helens? Why?
Helens? Why?
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