Respuesta:
Que la célula es nuestra composición inicial. En nuestro planeta todo ha evolucionado desde el inicio de los tiempos, al decir que nuestro origen viene desde una pequeña célula es algo extraño, pero millones de años después hemos evolucionado en la primera especie de ser vivo que razona
Explicación:
Studies of ancient rock fossils reveal that life probably began about 4 billion years ago,
when the Earth was very young. Nobody knows how life began on our planet. Most
scientists think it originated in liquid water.
What i do know is that, once it is formed, life is incredibly tough. Live bacteria have
been found in frozen Antarctica, in boiling water and within rocks located up to five
kilometers underground. We also know that these organisms can survive for years in the
harsh environment of space.
Once the vegetation spread across the planet, the air began to receive large amounts of
oxygen. Earth became the only planet in our Solar System with an atmosphere rich in
this element. By searching for oxygen on other worlds, perhaps one day we will find
evidence of extraterrestrial life
