Because they have less resources to fight off disease and nothing to use for immunity. Sub Sahara Africa is also very poor
RNA polymerase (green) synthesizes RNA by following a strand of DNA. RNA polymerase is an enzyme that is responsible for copying a DNA sequence into an RNA sequence, duyring the process of transcription.
The reason why I think these fossils are more common fossils than those of soft tissues or microorganisms one reason is that soft tissues decompose better than bone which gives more time for them to be buried.
Answer: Our kidneys filter out excess ions from our blood so that they can be excreted through urine. If the concentration of ions is too high, the kidneys make sure to filter as much of them as they can out of the body. If there are not enough ions, the kidneys will filter them back into the system.
Hope it helps