what makes a human?
and how did life begin?
Answers
Answer:
Evidence suggests that life on Earth has existed for at least 3.5 billion years, with the oldest physical traces of life dating back 3.7 billion years; however, some theories, such as the Late Heavy Bombardment theory, suggest that life on Earth may have started even earlier, as early as 4.1–4.4 billion years ago,
Answer:
On the cognitive level, humans are vastly different from most species. We have self-awareness, spiritual curiosity and philosophical musings. We possess the capacity for mathematics, language, invention, mechanical adaptation and music.
The earliest known life-forms are putative fossilized microorganisms, found in hydrothermal vent precipitates, that may have lived as early as 4.28 Gya (billion years ago), relatively soon after the oceans formed 4.41 Gya, and not long after the formation of the Earth 4.54 Gya.