If convention in the mantle increased how would the earths crust be affected?

Answer 1

If convection in the mantle increased, it would likely lead to more vigorous movement of tectonic plates at the Earth's crust. This could result in heightened volcanic activity, increased earthquake frequency, and the formation of new geological features such as mountains or rift valleys. Additionally, areas of the crust could experience uplift or subsidence, altering landscapes and potentially affecting ecosystems and human settlements.