<http://schema.org/about>
"In a balanced ecosystem animals play an important role in keeping their environments healthy and strong. When an imbalance is introduced, humans aren't the only"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/animals/photos/10-animals-that-are-bad-for-the-environment/related-photos>