Will mark brainliest ! the table below shows the half-life of an element: half-life data element half-life uranium-235 700 million years scientists have found that the uranium-235 content of an unknown prehistoric sample was reduced to one-half. what best describes the identity of the sample? a. a rock that formed 700 million years ago b. a rock that formed 1,400 million years ago c. an organism that died 700 million years ago d. an organism that died 1,400 million years ago

A rock that formed 700 million years ago

Explanation:

the alfred thayer mahan award for literary achievement is awarded each year by the navy league of the united states. the award is named for an american naval historian and theorist, rear admiral alfred thayer mahan, united states navy who, through his writing, provided stimulus and guidance to those who share in the defense of the nation. presented since 1957, "this award for literary achievement is awarded to a u.s. navy officer, u.s. marine corps officer, enlisted service member, or civilian who has made a notable literary contribution that has advanced the knowledge of the importance of sea power in the united states."[1]