What steps do scientists do to protect fossils one they have been found?

They usually just brush them down with brushes to remove any excess dirt surrounding the fossil until it is completely exposed in order to facilate the extraction process. Since they are very VERY fragile they can not be digged up by conventional means and must have a lot of patience.

Answer accretion;

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.