the homo erectus fossils from the lantian sites in china are dated years old.
a) 500,000
b) 800,000 to 450,000
c) 300,000-200,000
d)1.65 million – 1.54 million
e) 2.3 million – 1.8 million

Lantin County is where fossils of the H o m o erectus, now called Lantin Man, were discovered in 1964. The oldest fossil, a skull, was initially dated to 1.15 million years ago. In 2001, geologist Zhu and other scientists began researching the site again, and determined that the skull was 1.63 million years old.

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; the above statement is (true);