After the fossils are buried in the mud the soft tissues start to decompose rapidly. Leaving only the hard shells or bones of the animal. With time, sediment starts to build up on the top and then hardens into rock. The bones then start to decay, minerals start to enter and then end up replacing the organic material cell by cell in a process that is known as "petrification." So the answer you are looking for is B, Mud can prevent oxygen from reaching the dead organism.
Answer: A, the white mice are able to reproduce faster (the mouses only differ in color).
Primase is a DNA-dependent RNA polymerase. Primase synthesizes the short RNA molecules, or primers, that provide a 3'–OH to which DNA polymerase can attach deoxyribonucleotides in replication initiation. The DNA polymerases require a 3'–OH to which they add nucleotides, and therefore they cannot initiate replication.
I don’t get this question ;/
A string of amino acids attached together is called a <u>Polypeptide Chain(S)</u>
