1. As the ice sheet melted, soil was formed.

2. As the glacier retreated, the terrain levelled out and waterways were created.

3. The Ice Age increased the diversity of tree species.

4. The Finns have learned and mastered the care of forests.

The bedrock in the territory of Finland is truly very old, dating back 1800-2800 million years. However, the history of wildlife in the Nordic countries can, by comparison, be viewed over a much shorter time period. About 20,000 years ago, the entire territory of present-day Finland was covered by an ice sheet several kilometres thick. In the period 10-13 thousand years ago, the ice began to melt, with life returning to the territory of Finland, starting from the east and south-east.