Answer: site of ancient continental collision oceanic crust subducting under continental crust
Explanation:
Gaining stream describes a stream which receives water through the inflow of groundwater through the stream bed.
Groundwater that enters a gaining stream is coming from a saturated zone. Gaining stream channels are typically at or below the water table level. When the water table crosses the land surface over a large, relatively flat area, bodies of water and marshes are formed.
The channels of gaining streams are usually at or below the level of the water table. Bodies of water and marshes form when the water table intersects the land surface over a broad, fairly flat area.
"Gaining stream," which typically draws water from the earth. The term "losing streams" refers to streams that leak water into the earth from the streambed. Rivers can grow and shrink in different places; they can grow at one point in the year and shrink at another. Additionally, even a stream that is growing will be losing some water, as the yellow arrow illustrates, and vice versa.
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D. high and low levels of silica in the different type of lava.
Explanation:
The volcanoes have different types of explosions. Some tend to be highly explosive, some less explosive, some don't have explosions at all, while some have combinations of different eruptions. The reason for this diversity in the eruption types is mostly the composition of the magma, or rather how high is the silica content in it.
Basically, the higher the silica level in the magma the higher the explosiveness, and the lower the silica level the lower the chances of explosiveness. This is the case because the higher amount of silica makes the magma thicker, so the gasses are trapped and they explode, while when the lower silica content makes the magma less thick, so the gasses are not trapped and explosions are lacking.
Answer:
the pattern of the ages of rocks of the seafloor support the theory of plate tectonics because it tells us if the tectonic plates at the seafloor are spreading apart in a divergent boundary
Answer:
As one plate subducts, it sets up convection currents in the upper mantle that 'exert a net trenchward pull'
Explanation:
