Consider the following extract from paragraph 3 of the article: “Ever since mining at Zollverein and the…

If mining in the Zollverein and surrounding region hadn’t ended, the area wouldn’t be home to a big variety of animal and plant species nowadays.

If mining in the Zollverein and surrounding region had ended, the area wouldn’t have been home to a big variety of animal and plant species nowadays.

Assuming that the mining in the Zollverein and surrounding region ended, the area would be home to a big variety of animal and plant species nowadays.

Provided that mining in the Zollverein and surrounding region ends, the area may be home to a big variety of animal and plant species.

Unless mining in the Zollverein and surrounding region ends, the area may be home to a big variety of animal and plant species.