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:
I believe alleles for the same trait are separated from each other during the process of meiosis.
I think DeniceSandidge. DNA is made up of molecules known as nucleotide, which are the building block s of nucleic acid. Each nucleotide compose of pentose sugar, phosphate group and four nitrogenous base. The four types of nitrogenous bases found in nucleotide are adenine, guanine, thymine and cytosine hope this helps pls thank me