The correct answer is d. 3.5 billion years.
Prokaryotes were the first forms of life on Earth long before simple multicellular life appeared because of their ability to withstand extreme conditions. It is believed that the first living forms were bacteria combined with archaea in the microbial mat (multi-layered sheet).
Answer:
Un elemento químico es un tipo de materia constituida por átomos de la misma clase. En su forma más simple, posee un número determinado de protones en su núcleo haciéndolo pertenecer a una categoría única clasificada por su número atómico, aun cuando este pueda desplegar distintas masas atómicas.
Explanation:
Due to the laws of motion the airbag causes force in the other direction while the person is moving forward, thus trying to equal out the force acting apon the person to make them stay in place.
The axial skeleton consists of the skull, rib cage and vertebral column but her it looks like the appendicular skeleton
False, precipitation falls from the atmosphere to the earths surface.
