How did the first americans get to north america? ?

The answer is: Browsing.

Explanation:

Researchers from different European and North American universities have made a finding that shatters the most widespread hypothesis about the arrival of the first men to America, which claimed that they arrived in the American continent from Siberia crossing the Bering Strait, passable thanks to the decline of the oceans caused by the last great glaciation.

The answer is: Browsing.

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.