It is water pollution, since you are polluting the river.
Hope I helped!
“The virus cannot reproduce itself outside the host because it lacks the complicated machinery that a [host] cell possesses.” The host's cellular machinery allows viruses to produce RNA from their DNA (a process calledtranscription) and to build proteins based on the instructions encoded in their RNA.
Change in motion from one position to another in a given time = speed.
By using a punnet square,, all of the grafted branches will be S(sweet)s(sour),, so the offspring will be mutated