1-throw rubbish inside the water.

2-throw toxic elements in water.

Root effects:

1-killing a lot of organisms.

1- decrease the number of schools.

2- low the level of scientific topics.

Root effects:

1-rising of illiteracy.

2-stopping the development of the community

1- the polluted air from factory.

2- vehicles.

Root effects.

1- increase the temperature.

2- kill some animals.