The cold currents flowing along the ocean floor displaces the warmer water upward, which shows sites of upwelling.
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The fertility of surface and non-surface layers decrease
They look for the rock Kimberlite.
The inner core is solid, but the mantle is the only layer of Earth that flows in currents. These currents are caused by convection. If you don't know what convection is then you might as well look it up because I don't have a good definition.
As the geology officer on an expedition to a newly discovered Earthlike planet, you might determine whether the planet has a crust composed of plates that move by chains of volcanoes along continental coastlines.
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It might support large shellfish fisheries as well as acting as nurseries for young fish.
The fertility of surface and non-surface layers decrease
The fit of the coastlines of different continents, the distribution of similar fossils across continents, and the presence of similar rock formations on different continents led early mapmakers to speculate that continents may have moved over time. This gave rise to the theory of continental drift, which was later developed into the theory of plate tectonics.
If the continents were once connected, similarities in coastline features could include similar shapes, geological structures, and fossil evidence of past connections. Additionally, the coastlines might have similar trends or patterns that suggest common tectonic history.
1.Upwelling provides nutrients that supports animals and plants in surface waters. 2.Many fisheries are located in areas of upwelling because ocean animals thrive there
Ocean currents have no effect whatsoever. Seafloor spreading is caused by convection currents in the rock of the earth's mantle.
what type of artifact might indicate what an ancient cultue ate
Scientists want to learn about ocean currents because the currents affect Earth's climate and atmosphere and act as conveyor belts.
this is no use
convection currents
This question indicates that you might not know the meaning of the word "indicate".