Answer:
Movement in the mantle caused by variations in heat from the core, cause the plates to shift, which can cause earthquakes and volcanic eruptions.
<u><em>Answer:</em></u>
<u><em>I think B. But I may be wrong :/</em></u>
<u><em>Explanation:</em></u>
<u><em>Please give me brainliest :)</em></u>
Convection currents form in atmosphere and freshwater lake. Convection currents occur when there is difference in temperature in both substances (eg. fluids). When there is a difference in temperature, the hot substance rises and the colder one sinks. The flow then will be form a hotter to the colder region.
Do you really believe that the earth was MILLIONS years OlD???
Scientist just guessed the numbers out. It's funny how people believe them.
Anyways here is what google says: 145 millions years ago.
Link: <u>https://www.livescience.com/28739-jurassic-period.html </u>
Sound it out i guess... what exactly are you asking?
