What were the dangers in the Precambrian time period?

During the Precambrian time period, which spans from Earth's formation about 4.6 billion years ago to roughly 541 million years ago, the planet faced several dangers. The environment was characterized by extreme volcanic activity, intense meteorite impacts, and fluctuating atmospheric conditions, including low oxygen levels. Additionally, the oceans were often anoxic, leading to harsh conditions for early life forms. The lack of a stable climate and the presence of toxic elements in the environment posed significant challenges for the survival and evolution of primitive organisms.