Was/were the first to carefully document observations of blood cells, sperm cells, and other microorganisms. anton van leeuwenhoek robert hooke hans and zaccharias janssen charles spencer max knott and ernst ruska

Antonie Van Leeuwenhoek

Explanation:

I've learned this in apwh, he is the father of Microbiology

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);