breaking of rocks due to constant expansion and contraction involves mechanical stresses from expanding n contracting. so ans is A. mechanical weathering
Welkom is actually the second-largest city in the province of FREE STATE in South Africa, located about 140 kilometres northeast of the provincial capital, Bloemfontein.
Th province was formerly known as the Orange Free State before the year 1995. Interestingly, it is the only one of the four original provinces of South Africa which did not undergo border changes, excluding the reincorporation of Bantustans.
A topographical map shows elevation
<span>Canadian canoe routes</span>
