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Oceans
Because They Are dumb and its very frustrating that no one can answer this question! sorry people who read this.
The first true cells were prokaryotic cells. These were simple life-forms that didn't have a nucleus. The next to evolve were eukaryotic cells which do have a nucleus.
Cells are the smallest form of life able to survive on their own.
The earliest life forms were mostly different kind of bacteria and plants and other organisms.
Unicellular plants and animals were first forms of life on Earth
Plants
bacteria is not right it is prokaryotes
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.
Respect for Earth and all forms of life
Because there were no plant life forms on the Earth when it was first created.
Earth is the planet with the most life forms.
Archeo-bacteria
There were no life forms as we know them during the Proterozoic period. With oxygen just then being accumulated in the earth's atmosphere, it brought the first advanced single-celled eukaryotes and multi-cellular life forms.
The Precambrian Era was the first emergence of complex, multicellular life forms on earth. Jellyfish and segmented worms were discovered to have lived during this time.
all life-forms are located in the biosphere
microfossils A freakin plus