An increase of human populations generally does not increase threats to biodiversity.

People arguing from the viewpoint of deep ecology promote the concept of biocentric equality; all things in the biosphere have an equal right to live.

Which factor has the greatest impact on threatened species?  

Humans appropriate about ____ of the productivity of the terrestrial environment.

On average, about how many hectares are required to support one person from China?

Desertification is a process by which ecosystems in seasonally dry climates are degraded by human activities into human-made deserts. This process is not considered a threat to biodiversity because many plant and animal species find new habitats in these newly created deserts.

What is the best shape for a forest to be if your goal is to protect deep forest   species? Assume that the area of the protected area does not change. (Hint:  Think about deep forest and deep forest species.)

The “Tragedy of the Commons” is:  

When conservation biologists are unable to distinguish among species, they  may categorize species by their ecological roles rather than their taxonomy.

The loss of keystone species can create a series of linked extinction events. This is referred to as a(an)_____________.