When did the first living organisms live on earth?

Answer The first living organisms lived during what is known as the Archean Eon, between about 2.5 and 4 billion years ago, according to the Smithsonian Institution. While there is no precise date for the... Read More »

Top Q&A For: When did the first living organisms live on earth

What was the earliest known group of living organisms on Earth?

It is impossible to determine absolutely the earliest living organisms using today's scientific techniques. Although most scientists agree that the Archaea, simple bacteria-like organisms, were the... Read More »

How many species of organisms live on the earth today?

Science has identified over two million species of organisms. Estimates project that there are nearly fifty times that many waiting to be discovered, which means that there could possibly be 100 mi... Read More »

When did humans first live on the earth?

The first man, Homo, was Homo habilis that lived on Earth from 1.5 to 2.2 million years ago. Louis Leaky discovered Homo habilis. The first hominid, Australopithecus, lived in Africa two to three m... Read More »

Who was the first person to describe microscopic organisms&living cells?

Anton van Leeuwenhoek of the Netherlands was the first to describe living cells and various forms of bacteria, in the late 1600's. A few years prior to this, Robert Hooke observed chambers in cork,... Read More »