Question

Short / Long answer type questions .
What was the composition of the primitive atmosphere that favoured abiotic origin of life on the earth ?

Answer 1

The surface was molten. As Earth cooled, an atmosphere formed mainly from gases spewed from volcanoes. It included hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today's atmosphere. After about half a billion years, Earth's surface cooled and solidified enough for water to collect on it.