It was in the primitive oceans that life began almost ___________ billion years back.A 1 B 3.5 C 2.5 D 6

It was in the primitive oceans that life began almost ___________ billion years back.A 1 B 3.5 C 2.5 D 6

When did life first appear on the planet?3.5 million years ago3.5 billion years ago2.1 million years ago2.1 billion years ago

Bach lived in Vienna until his death. By his late 20s his hearing began to deteriorate and by the last decade of his life he was almost completely deaf.

The first thing that was needed on the primitive earth for life to begin wasGroup of answer choicesoxygenorganic moleculescool temperaturessunlightmetabolism

True or false? All living things have evolved from simple life forms that lived more than 3 billion years ago.