Answer: Continental slope
The continental slope is said to be the steepest part of the continental margin, where there is a sudden decrease in slope or it suddenly descends down to the ocean floor and the sea floor begins to level out towards the abyssal plain. Moreover, this portion of the sea floor also marks the end of the continental margin called the continental rise.
<span>the correct answer for this question is C - the currents responsible for powering the movement of tectonic plates are convection currents. Convection currents are those currents that occur due to a temperature exchange.</span>
They are widespread grasslands
Answer: is constant
Explanation:
In order to analyze the velocity of the stars within a galaxy, the <u>galaxy rotation curves</u> (developed by the American astronomer Vera Rubin) are used. These graphs are elaborated as a scatter diagram in which the orbital velocity of the stars present in a galaxy is represented on the Y axis and the distance of these stars to the center of the galaxy on the X axis.
Thanks to this diagram, it has been possible to observe a characteristic behavior in the rotation speed of the stars (and gas) present in the galaxies, which differs from the rules of the orbital movement of the planetary systems postulated by Newton and Kepler.
This means that in these galaxy rotation curves it has been observed that the rotation speed of stars and gas is "constant", regardless of the distance to the center of the galaxy. This discrepancy and these results were then used to demonstrate the existence of dark matter in the universe.
