Life first evolved when God created animals during creation. Human life began shortly thereafter on the sixth day. Ever since then, men have been born and living just as they did when the earth began
Answer:
The Earth itself formed some 4.5 billion years ago. Less than 700 million years after that (3.8 billion years ago) the first microbial life was present in the Earth's water. Evolution began at the same time as these primitive life forms took advantage of the specific environments they were best suited for.
Both of these answers are good, but they are based on the Evolution Theory and the Christian's way of believing. Nobody has a real answer for this question, because our little archeologists' machines can't get a good read on anything that far back in history. You have asked a question that even scientists can't directly answer.
Intelligent life evolved on earth about 68,000,000,000 years ago. Smart life has not yet evolved.
It evolved in H20 around a couple of billion years ago.
They first evolved in oceans and water, the first animal was indeed a cell.
3.5 billion years ago
Sedimentary Rock
Earth shapes life. Life has to adapt to the environment they find here on earth.
Hot spots originate in the mantle, well below the Earth's surface.
The Ocean is where most of Earth`s rain and snow comes from
Solar winds originate from the Sun's corona. These winds vary in speed and carry with them magnetic clouds and can produce storms in the Earth's magnetosphere.
4.6 BYA
Not at present. All life on Earth appears to have evolved here, and it's all related.
Life which does not originate from planet Earth may very well have developed on other planets. There is really no other explanation for where it would have come from.
An exabiologist is one who studies alien life forms; creatures that do not originate from Earth. :)
On Earth One must remember that God made all things spiritually before He made them physically and placed them upon the earth.
Earth
Alien, is the term used to refer to life which does not originate from Earth. Though no hard evidence has ever been found to confirm presence of any life form outside earth.
There are many places where weather could potentially originate on Earth. Most of the weather on Earth originates from the atmosphere.
From the goddess
The definition of alien is a "person in a country who is not a citizen of that country". They are also referred to as Extraterrestrial life (from the Latin words: extra ("beyond", or "not of") and‎ terrestris ("of or belonging to Earth")) is defined as life that does not originate from Earth.
earth origin
Underground - from radioactive decay.