<span>When the strength of the rock exceeded it suddenly breaks causing an earthquake </span>
Answer:
This is easily the most argued question about the fall of Rome. The Roman Empire lasted over a thousand years and represented a sophisticated and adaptive civilization. Some historians maintain that it was the split into an eastern and western empire governed by separate emperors caused Rome to fall.
Most classicists believe that a combination of factors including Christianity, decadence, the metal lead in the water supply, monetary trouble, and military problems caused the Fall of Rome.3 Imperial incompetence and chance could be added to the list. And still, others question the assumption behind the question and maintain that the Roman empire didn't fall so much as adapt to changing circumstances.
The answer is B that should be the answer
The answer to your question is DRIED PLANT MATTER ❤️
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.
