It is not clear what your question is asking but I suspect that it is about panspermia.
The theory that life is a universal reality that is not confined to Earth.
No. Cell theory is the theory that cells make up organisms. The only theory dealing with the origin of life is life origin theory.
Cosmozoic or Interplanetary Theory as put forward by Richter states that life had reached the earth from some other heavenly body in the form of resistant spores of simple organisms in meteorites or in spaceships. Upon finding fertile soil here, the theory goes, they grew and then evolved into the various existing forms.
They do not think plant life 'came' to Earth. They believe it evolved here.
Plants came first in the evolution of life on Earth, appearing before animals.
In our daily life on Earth, we call that the object's "weight".
In our daily life on Earth, we call that the object's "weight".
If you believe in other life rather than just on earth a theory is that things from another planet came down and did genetic mutations to people.
as because the gases on the earth helped the survival........and so it could have been said that earth have life
Spontaneous generation is the theory that the creation of life began from an inanimate object. This is obsolete theory. It was also known as Equivocal Generation.
In our daily life on Earth, we call that the object's "weight".
Life on Earth is believed to have originated from simple organic molecules that formed in the early Earth's environment. The prevailing theories about the origins of life include the primordial soup theory, which suggests that life arose from a mixture of chemicals in the Earth's early oceans, and the panspermia theory, which proposes that life was brought to Earth from outer space. Other theories include the deep-sea vent theory and the RNA world hypothesis.