What is autopsy in terms of biology

Autopsy i defined as dissection of human body to determine the cause of death or injury prior to death, it is other-wisely called Postmortem test/examination

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i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.