Calculate the total number of years that each of the geologic eras lasted, rounding to the nearest 100 million. Then, calculate each of these values as a percentage of the total 4.6 billion years of Earth's history. Round your answer to the units place.

Eoarchean Era - 400 million years - 8,7% of Earth's history.

Paleoarchean Era - 400 million years - 8,7% of Earth's history.

Mesoarchean Era - 400 million years - 8,7% of Earth's history.

Neoarchean Era - 300 million years - 6,5% of Earth's history.

Paleoproterozoic Era - 900 million years - 19,6% of Earth's history.

Mesoproterozoic Era - 600 million years - 13,0% of Earth's history.

Neoproterozoic Era - 459 million years - 10,0% of Earth's history.

Paleozoic Era - 290 million years - 6,3% of Earth's history.

Mesozoic Era - 185 million years - 4,0% of Earth's history.

Cenozoic Era - 66 million years - 1,4% of Earth history.

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.