The Prime Minister of the United Kingdom is appointed by the Queen, with agreement from the House of Commons (the elected members of Parliament). This is normally a mere formality and the leader of the party with the most seats generally gets appointed.
Answer:
Contour farming
Explanation:
I think it would be contour farming mostly because none of the others seem to be done on ridges or slopes.
It depends on the mass of the ice,temperature around it and latent heat energy required to melt the ice.
However the furthest a ice berg can travel is estimately 32-40°n/s
