Answer:
two tectonic plates are diverging away from each other, which causes new crust to be created at the boundary between these two plates.
Explanation:
(1) convection occurs in substances that flow.it can be initiated by uneven heating. (2) in the mantle convection of hot rock creates plumes which move tectonic plates. in the outer core convection causes magnetism. (1) is your first question and (2) is your second. hope this helps! :)
The study of lakes is called <span>Limnology</span>
In the ocean, it is colder in the deeper parts and warmer in the shallow parts.
Mid-ocean ridges extend to all of Earth's oceans. Mid-ocean ridges lie under thousands of meters of water. Mid-ocean ridges spread additional crust on the ocean floor. I'm not sure about the the remaining statement but I know for sure that these three statements are true.