All organisms on Earth are referred to as carbon-based life forms. Carbon has a number of advantages that allow it to be part of a wide variety of different stable compounds, more so than other elements. It is likely that life on other planets would be carbon based as well.
The layer containing all forms is biosphere. It is the life of all organisms.
Respect for Earth and all forms of life
Single celled organisms like a bacteria and are some of Earth's oldest life forms.
Archeo-bacteria
The earliest life forms were mostly different kind of bacteria and plants and other organisms.
All life on Earth is carbon based this is because carbon bonds with other elements, especially oxygen, hydrogen and nitrogen. It is often assumed in astrobiology that if life exists somewhere else in in the universe, it will also be carbon-based. ---- 100%
99.999999999% of all life on earth is carbon based.
Carbon. Life on Earth is based on the complex chemistry of Carbon.
It would be called xenobiology if any such life forms existed (and they may, but).
The Proterozoic is a geological eon representing the time just before the proliferation of complex life on Earth. Most life forms at the time were single celled organisms.
organisms in the archaea kingdom Prokaryotes
well, other planets have properties such as gases which life forms or organisms can't live in or they would die.