Question 1

The biggest problem with invasive species is that in the new location, they ____.

Accepted Answer

A) are always bigger than native species 
B) have no population controls such as predators 
C) are always stronger than native species 
D) have higher reproductive rates than native species 
E) evolve more quickly than native species

Question 2

Biodiversity hotspots are ____.

Accepted Answer

A) tropical areas where extinction is occurring 
B) islands where extinction is occurring 
C) areas with a variety of threatened or endangered species 
D) large areas with a variety of thriving species 
E) ecosystems that are acting to slow climate change

Question 3

Consider the Case Study: Polar Bears and Climate Change. What do you think will be the result of removing the top predator from an ecosystem as vast as the Arctic? Be as specific as possible.

Accepted Answer

The answer of Consider the Case Study: Polar Bears and...

Question 4

Some people believe it is unethical to collect wild animals and plants for display and personal pleasure and that such plants and animals should be left in the wild. Explain why you agree or disagree with this view.

Accepted Answer

The answer of Some people believe it is unethical to...

Question 5

Explain what you think E. O. Wilson meant when he said, "The first animal species to go are the big, the slow, the tasty, and those with valuable parts such as tusks and skins."

Accepted Answer

The answer of Explain what you think E. O. Wilson...

Question 6

A 2006 study estimated the total polar bear population is likely to decline by how much by 2025?

Accepted Answer

A) 10-15% 
B) 20-25% 
C) 30-35% 
D) 40-45% 
E) 50+ %

Question 7

Some toxic chemicals, such as those in DDT, can be stored in the fat tissue of animals. As these animals become food for larger and larger animals, the amount of the toxin gets larger and larger. What is this process called?

Accepted Answer

A) biophilia 
B) biosphere 
C) biotechnology 
D) biomagnification 
E) iophosphoresence

Question 8

Colony collapse disorder is ____.

Accepted Answer

A) limited to Europe 
B) limited to the U.S. 
C) when honey bees leave in winter and don't return to their hives in spring 
D) the disintegration of bee hives 
E) experienced by members of the bee colony after the queen's death

Question 9

All mass extinctions thus far have been caused by natural phenomena that drastically changed environmental conditions.

Accepted Answer

A) True 
 B)False

Question 10

The ____________________ suggests we should take measures to prevent or reduce harm to the environment and human health even if some of the cause-and-effect relationships have not been fully established scientifically.

Accepted Answer

The answer of The ____________________ suggests we should take measures...

Exam 9: Sustaining Biodiversity: The Species Approach