Ten fish were living well in a 10-gallon fish tank. when five fish were added to the other tank later, some fish began to die. which explains this occurence?

1.989×10^30 kg is the weight of the sun.

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.