What was the temperature maintained in Miller's experiment (in $^{\circ} C$)?

Louis Pasteur,by careful experimentation,demonstrated that:

Explain the Big Bang theory in the context of the origin of the universe.

Following are the two statements regarding the origin of life.
$(A)$ The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
$(B)$ The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements,which one of the following options is correct?

Which scientist permanently disproved the theory of spontaneous generation?

Cyanobacteria originated about how many years ago?