"someone in the audience asks the man promoting his new book on humor what makes something funny. his answer is what you expect—context. after a pause he adds that if someone said something, like about someone, and you were with your friends you would probably laugh, but if they said it out in public where black people could hear what was said, you might not […] only then do you realize you are among 'the others out in public' and not among 'friends'."

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.

can you explain it better

they can increase to boost the enonomy.

the invasive species was introduced due to commercial purpouses, as there was a demand for fur clothes and hence, a business opportunity connected to this product. actually, it was when the nutrias scaped, causing harm to the us ecosystems when they acquired the status of invasive species. in this case they have caused an environmental problem, but it could have affected also economic interests or even human health.