The first life on Earth originated in ........ .

Louis Pasteur's experiments,if you recall,proved that life can arise from only pre-existing life. Can we correct this as 'life evolves from pre-existent life',or otherwise we will never answer the question as to how the first forms of life arose? Comment.

Which group of the earliest photosynthetic organisms appeared during the origin of life?

Organic compounds first evolved on Earth,which were required for the origin of life,were:

The theory that life originated from decaying and rotting matter like straw and mud is known as:

The theory that living organisms on the earth came from outer space is based on the study of