Looking at the food chain & relationships between organisms can give you a good idea of theoretical cause and effects.
For example:
Starfish are the natural predators of the mussel. If the starfish, that eat the mussels, were to be taken out of the picture: there would most likely be a higher population of mussels.
The three main systems of government used today are unitary systems, federal systems, and confederate systems
Answer:mutation
Explanation:
As it reproduces it can mutate and cause a new virus
Destruction of cells by viral reproduction.
Hope I helped!
