What does it mean that the vice president is “only a heartbeat away” from the presidency?

A Vice President must be ready to take the office of President if the latter dies or is forced to quit his position. According to the Constitution, the Vice President is the first in the line of succession in case of vacancy of the Presidency.

Explanation:

he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

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answer: held for the purpose of bringing nazi war criminals to justice, the nuremberg trials were a series of 13 trials carried out in nuremberg, germany, between 1945 and 1949

explanation: