In which sentence is the underlined word the proper adjective formed from africa?
a.
the african elephant is the largest land mammal.
b.
the africa elephant is the largest land mammal.
c.
the africa's elephant is the largest land mammal.

allowed for the prediction of the properties of missing elements.

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."