Question

why it is difficult to walk on marshy land

Answer 1

Because the ground is soggy. that's why it is difficult to walk in marshy land.

Answer 2

the ground is sloggy as we know that the lesser the surface higher the pressure.our feet do not have much surface area to walk on marshy land because the pressure exerted by our feet is enough to let the ground go inside if we have very broad feet,it would be easier for us to walk on marshy land.