Deep-sea vents in the ocean, discovered in the late 1970s. Also, now volcanoes are believed to be another source for life start-up.
Unicellular plants and animals were first forms of life on Earth
Life began in the oceans, because most life forms are primarily made of water. The first life forms were amoebas and amoeba's are mainly made of water.
Direct Ancestors of Cambrian life forms.
Earth is the planet with the most life forms.
Fire - it reproduces -it needs fuel -it is born -it dies -it adapts to it's surroundings
they were probably the first multicelluar life- forms
Unicellular plants and animals were first forms of life on Earth
When the ozone layer is formed, the life forms evolved. They were not possible earlier.
Plants
DNA I think
Xenobiology is the speculative Biology of extraterrestrial life forms.
Xenobiology is the speculative Biology of extraterrestrial life forms.
Xenobiology is the speculative Biology of extraterrestrial life forms.
Scientists think that the first life forms appeared on Earth about 3.6 billion years ago. These were simple cells that eventually evolved into the abundance of life we see today.
bacteria is not right it is prokaryotes
first of all if your asking this question, then your just looking for the answer for your science homework.Look in the book and you'll find the answer.
I presume you mean 'Martians'. It is faintly possible thsat very primitive life forms could exist on Mars, but no possibility of advanced life forms such as could communicate across space.