Question

question 2 (multiple choice worth 1 points) tg.01which of these processes best helps to maintain the composition of the mantle?
the cyclic movement of the liquid in the mantle

the cyclic movement between the mantle and the crust

the interaction between the inner core and the mantle

the interaction between the outer core and the mantle

Explanation:

To determine which process maintains the mantle's composition, we analyze each option:

• The mantle is mostly solid (with some semi - molten parts), so "cyclic movement of liquid in the mantle" is incorrect.
• The cyclic movement between the mantle and the crust (through processes like subduction and volcanic activity, where material from the crust is recycled back into the mantle and mantle material is brought to the crust and then back) helps in maintaining the mantle's composition.
• The inner core - mantle interaction doesn't play a major role in mantle composition maintenance as the inner core is solid and the interaction is not about recycling material for mantle composition.
• The outer core - mantle interaction is related to magnetic field generation and not mainly about mantle composition maintenance.

Answer:

B. the cyclic movement between the mantle and the crust