All living things are made up of cells.
The source code of transcription is mRNA.
the desert biome because it has very little rain so animals are adapted for very little precipitation.
The first life form found on earth were mostly bacteria. "For the next 1.3 billion years (3.8 to 2.5 billion years ago), the Archean Period, first life began to appear and the world's landmasses began to form. Earth's initial life forms were bacteria, which could survive in the highly toxic atmosphere that existed during this time."
