A cold front is the leading edge of a cooler mass of air, replacing at ground level a warmer mass of air, which lies within a fairly sharp surface trough of low pressure.
Answer:
its caused by the convection of air masses with differences in densities mainly due to their differences in temperatures.
-Hops
The Earths Surface, it’s also known as the troposphere also dense* lol
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This would be 'chemical' weathering.
Acid rain would react with the minerals in the rocks, causing them to break down.
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Answer:
Be,Mg,Ca,Sr,Ba.Ra[down the group electronegativity is decreasing]
Explanation: