Answer:
The combination of weather and land features, in which civilization lives, is an example.
3000 is the correct evelation. If you follow the line Z is one, you end up with 3000.
Catchment management is playing an increasingly important role in reducing the levels of potential contaminants in raw waters. An efficiently managed scheme will help to reduce pollution from agriculture and also help to control urban and chemicals
Zinc and petroleum would be the best aswer.
