Answer:
the answer should be option A
B creates a disturbance called an electromagnetic wave
Mass movements (also called mass-wasting) is the down-slope movement of Regolith (loose uncemented mixture of soil and rock particles that covers the Earth's surface) by the force of gravity without the aid of a transporting medium such as water, ice, or wind.
The rate at which it moved
The type of motion is the most important characteristic of a slope failure, and there are three different types of motion:
If the material drops through the air, vertically or nearly vertically, it’s known as a fall.
If the material moves as a mass along a sloping surface (without internal motion within the mass), it’s a slide.
If the material has internal motion, like a fluid, it’s a flow.
Because back then before pangaea occured the oceans we see today where all one before now they are seperated hope this helps.
Penumbra,<span> the Moon's faint outer shadow. Partial solar eclipses are visible from within the penumbral shadow.</span> And Umbra,<span> the Moon's dark inner shadow.<span> Total solar eclipses are visible from within the umbral shadow</span></span>
