Regarding the origin of life and the Big Bang Theory, which of the following statements are accurate?
a. The universe is estimated to be almost 13.8 billion years old.
b. The Big Bang Theory explains the origin of life from pre-existing non-living organic molecules.
c. Earth was supposed to have been formed about 4.5 billion years back.
d. Early Earth had an atmosphere containing free Oxygen, water vapour, methane, and ammonia.
e. Life appeared 500 million years after the formation of Earth.
f. Spontaneous generation theory was supported by Louis Pasteur’s experiments.
