In order for me to assist you, you must attach an image of the graph. :)
AB- is the blood type that is least common and 0+ is the most common
4.6 billion years ago
The study pushes back the clock on the origin of Earth's water by hundreds of millions of years, to around 4.6 billion years ago, when all the worlds of the inner solar system were still forming. Scientists had suspected that our planet formed dry, with high-energy impacts creating a molten surface on the infant Earth.
i hope this helped, have a nice day! (o:
Answer:
2 layers are in the plasma membrane
