A piece rate worker is paid A. a fixed rate per hour worked
B. a fixed rate for each item produced or action performed
c. a fixed rate per year

answer: answer is b.

[m < b = 120º]

step-by-step explanation:

the answer is d

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a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation: