Although Much of the World's Pollution Comes from Cities, They

Multiple Choice

Although much of the world's pollution comes from cities, they also can be "green" places to live. One such plan involves

A) allowing corporations to set their own pollution limits.
B) working to offset carbon emission by carbon absorption to create a carbon-neutral city.
C) planting more grass.
D) moving cities away from rivers to reduce pollution flow into waterways.