2007-07-25 05:49:01 · 3 answers · asked by stevenps49 1 in Science & Mathematics ➔ Biology
The first living organisms (Cyano bacteria) were born out of a soup of complex organic compounds caused due to the lightning strikes and volcanic eruptions in the ancient Earth.
2007-07-25 05:54:16 · answer #1 · answered by ag_iitkgp 7 · 0⤊ 0⤋
Biogenesis is the process of lifeforms producing other lifeforms, e.g. a spider lays eggs, which form into spiders.
The term is also used for the assertion that life can only be passed on by living things, in contrast to abiogenesis, which holds that life can arise from non-life under suitable circumstances, although these circumstances still remain unknown.
Until the 19th century, it was commonly believed that life frequently arose from non-life under certain circumstances, a process known as spontaneous generation. This belief was due to the common observation that maggots or mould appeared to arise spontaneously when organic matter was left exposed. It was later discovered that under all these circumstances commonly observed, life only arises from life.
2007-07-25 06:26:09 · answer #2 · answered by Grigore G 2 · 0⤊ 0⤋
Why can't it still be happening?
2007-07-25 06:43:15 · answer #3 · answered by Dr. Cancer 3 · 0⤊ 0⤋