Why do you think people work to develop new techniques for mining and refining gold?

well the older techniques were working for them like panning was one of the ways, now we use machines and water to wash the mud and clay away(i saw them do it in the north, they were using a hose to defrost the ground to get to the gold, they even found some really old ice that was in the ground.)

white water gold rush is a really good example about the heights we go to to get gold.

Explanation:

the correct answer is 2.

a slump in geology means a mass movement process of slope failure. a mass of rock or unconsolidated material drops along a slip surface. in other words, rock layers move a short distance down the slope. the slump block is an intact block (2), without any landslide material.

in this image, 1 is the surface of rapture (scarp), 2 the slump block, 3 main scarp (crown), 4 base of rapture with debris flow.

slumps are caused by clear cutting on unstable soils and the sagging of earth, in coastal areas they are due to wave infiltration.

answer; dead end or culdesac;