1. Human-Enviromental Interaction
Unit 4

2. Europe’s Changes to Environment
Dutch Need Land for their Growing Population-
Create Polders.
Transform the Zuider Zee.

3. Europe’s Changes to Environment
The Sea Threatens Low-lying Land in the Netherlands-
Build dikes.
Erect seaworks, including terpen.

4. Europe’s Changes to Environment
Venice is an Island City-
Use boats to move people and goods.

5. Europe’s Problems
Venice’s Buildings and Canals- The buildings are sinking, and the canals are polluted by industrial waste and sewage. Saltwater is eating away at the buildings. Killer algae kills fish and creates a stench.

6. Europe’s Problems
Europe’s Forests- Huge areas of Europe have lost their native forests as wood has been used for centuries for fuel and building. Acid rain has also killed trees.