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."
The answer is beta-galactosidase
Answer:
C.
Event A represents volcanic eruption and Event B represents creation of mountain ranges.
Sorry if it's wrong :(
The answer is proto-oncogenes, oncogenes, tumor-suppressor genes. The first group, called proto-oncogenes, produces protein products that usually improve cell division or prevent normal cell death. The mutated forms of these genes are called oncogenes. The second group, called tumor suppressors, makes proteins that generally prevent cell division or cause cell death.
I believe it is used to determine the age of fossil fuels
