1 Which human activity has had the least effect on the biosphere?
(1) agriculture
(2) industry
(3) urban development
(4) aquaculture

4

Explanation:

because the ocean dont produce any thing to the earth's biosphere.

the answer is g1

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."