The Earth’s core is cooling down very slowly over time. One day, when the core has completely cooled and become solid, it will have a huge impact on the whole planet. Scientists think that when that happens, Earth might be a bit like Mars, with a very thin atmosphere and no more volcanoes or earthquakes. Then it would be very difficult for life to survive – but that won’t be a problem for several billions of years.
It has opened new trade routes and we can see what they used for their roads and we can make ours better.
The enormous submarine canyon located off the coast of central California in Monterey bay is very well studied for both its geologic and biologic features, as well as being a national marine sanctuary. Thus, "Monterey" is the correct filler to be used here.
<h3>What is a Submarine canyon?</h3>
A submarine canyon is a steep-sided valley that has been dug into the seabed of the continental slope; it can occasionally extend deep over the continental shelf, have virtually vertical walls, and can have canyon walls that are up to 5 km high, like the Great Bahama Canyon. Submarine canyons provide routes for the movement of turbidity currents over the seafloor, just like above-sea level canyons do for the movement of water through land.
Rivers may provide turbidity currents or storms, and undersea landslides, earthquakes, and other soil disturbances may create them on the seafloor. Turbidity currents are movements of water that are thick and sediment-laden. The continental slope is eroded by the swift (up to 70 km/h) turbidity currents that flow downslope.
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Answer:
scientist can tell by observing the seismic waves that are recorded all over the surface of the earth from distant earthquakes
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