Sam has been diagnosed with having pulmonary edema. Which heart valve is most likely malfunctioning and not closing properly?

He should put sand around the spill in order to contain it so that it won't spread

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.