Biodiversity

Globally, the leading cause of biodiversity loss is 

• invasive species
• poaching and overharvesting
• pollution
• habitat change and loss 

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Why are invasive species such a problem in their new ecosystem?

• a. The new ecosystem isn�t adapted to their presence
• b. The new ecosystem is probably weaker than the native one
• c. They have mutations making them more adapted to the new ecosystem
• d. They cause mutations in the native species

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Which biome, because of its climate, has the largest number of species of plants and animals?

• tundra
• desert
• tropical rainforest
• pine forest

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What is an advantage of a biodiverse ecosystem?

• Can withstand changes in resources

• Can recover more quickly from a natural disaster

• Can withstand the immigration of a new predator

• all of the above

A species of trout needs a pH of 8.0 to 8.2 to suruvive. This species is considered a 

• niche generalist
• niche specialist
• niche fundamentalist
• niche engineer

Which is most likely to be an indicator species?

• tree frogs
• Rabbits
• Horseshoe crabs
• Sharks

Which of the following requires a recovery plan for increasing endangered populations?

• Endangered Species Act
• CITES
• Lacey Act
• One Act Plays

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The three types of biodiversity are

• genetic, species and ecosystem
• medical, agricultural, ethical
• habitat loss, pollution, overharvesting
• camera traps, invasive species, cookies

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The number of species in a given area is known as:

• biodiversity
• species evenness
• species richness
• variability

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 Which is LEAST LIKELY to push a species toward extinction?  
         

• a.   Cutting down entire forest 
• b.  Putting animals in a zoo 
•  c.   Polluting mountain streams 
• d.   Introducing new species to an ecosystem with no known natural predator    

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