Extinctions

What word do we use to describe a species which has no members still living?

• endangered
• extinct

What is a mass extinction?

• When all the species in a particular area on earth suddenly go extinct
• When multiple species from all over the earth suddenly go extinct 
• When one species goes extinct due to habitat changes
• When all life on earth is wiped out 

During which geologic era did trilobites, mosses and ferns first appear in the fossil record?

• Paleozoic
• Mesozoic
• Cenozoic
• Precambrian

What event marks the end of each geologic area?

• 1 million years
• burst of new life forms
• mass extinction
• ice age

At the end of the Mesozoic Era there was a mass extinction.  Which of the following is attributed as being the main cause?

• asteroid or comet impact
• major volcanic eruption
• earthquakes
• climatic changes

 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    

The Florida panther is a large cat related to lions. Panthers eat deer, rodents, and farmers' livestock. Panthers once lived in Tennessee. Which of these most likely caused panthers to disappear from Tennessee?

• Panthers in Tennessee were unable to reproduce.
• People hunted panthers and destroyed their habitats.
• Natural predators killed and ate all the panthers in Tennessee.
• Panthers in Tennessee ran out of food. 

Humans are causing extiction in which ways?

• By over hunting animals for food or products.
• By destroying the natural habitat of species.
• By polluting the environments of the world.
• All of the above.

Tags

CCSS.RI.11-12.5

CCSS.RI.6.5

CCSS.RI.7.5

CCSS.RI.8.5

CCSS.RI.9-10.5

How can you help prevent extinctions?

• By not polluting our environment.
• By protecting sensitive habitats and species.
• By not eating or buying products from endangered animals.
• All of the above.

Which of the following was a natural factor that caused extinctions? 

• Over harvesting
• Changes in the oxygen levels
• Pollution
• Habitat destruction