Lists the six attributes used to identify terrestrial and wetlands areas that are important ecologically. These attributes are based on four ecological principles, which are explained.

Sustainable design is a philosophy of developing products in line with social, economic, and ecological sustainability principles. In design, it is important to understand the distinction between Green Design and Sustainable Design....

The concept of competitive exclusion, explained here, states that two species cannot co-exist when needing the same, limited resources to survive. The different types are described and examples are provided.