Answer:
(B) a descending convection current in the Earth's mantle
Explanation:
The connection between the sea floor and ocean produces a conventional current due to its waves
Answer:
the ratio of resolution will be
Explanation:
We have given the diameter of Telescope A is 1 meter
And diameter of telescope B is 6 meter
We know that resolution of telescope is inversely proportional to diameter of the telescope
So 
We have to find the ratio of resolution of B to A
So 
So the ratio of resolution will be
Water plays an important role in weathering and breaking down rock. ... Forces like wind and water move the rock pieces. They mix with matter like sand to become sediment. Weathering and erosion help shape Earth's surface.