Species area estimates predict that present day extinction rates are ______________ times the background rate.  

Which of the following is NOT listed in your text as a major threat to biodiversity on this planet? 

A disease that threatens cave-dwelling bats in North America is called 

Each cell is able to maintain an internal environment within a range that favors survival. This condition is called ___________.

Most fisheries on earth are currently being maintained sustainably.  

The variety of metabolic compounds in an ecosystem is called _______________________.  

Which of the following is NOT a medication that your text lists as being derived from a plant compound?

A species that was hunted for its meat and oil and went extinct in 1768, only 27 years after its first contact with man is the _____________________. 

Which concept represents the highest degree of certainty?

The generic term for wild animals used for food is bush meat.