Answer:
The beginning of the Precambrian period starts with the formation of Earth about 4.5 billion years ago and ends at the first sign of complex life about 540 million years ago. Though the Precambrian Period is often referred to as a period, it's actually the only supereon, which means that it spans multiple eons.
Explanation:
I believe the answer would be #2; it became more realistic:)
The 15 amendment granted all men regardless of race the right to vote
Pneumonoultramicroscopicsilicovolcanoconiosis. The word represents a lung disease related to the inhalation of silica particles.
Vincent van Gogh created this painting hun !!!!