For a basic 500 square feet project in zip code 47474, the benchmark cost to Insulate Your Home ranges between $0.63 - $1.43 per square foot* . To estimate costs for your project: 1.
So in answer to your question, the oldest fossils are stromatolites, and the life forms that created those fossils were prokaryotic bacteria and algae like cyanobacteria.
the earliest known life form were single celled organisms which roamed the earth they appeared around two billion years ago Answer: The Earth formed about 4.5 billion years â¦ago. 700 million years later (3.8 to 3.5 billion years age) life started.