Quarter 4 Cumulative Env Sci

What is an invasive species?

• An organism that is new to an environment that has positive effects on the environment.

• An organism that is native to an environment that has negative effects on the environment.

• An organism that is new to an environment that has negative effects on the environment.

• An organism that is native to an environment that has positive effects on the environment.

Invasive species can have a major impact on the ecosystem.

• TRUE

• FALSE

Why do the populations of invasive species grow so quickly? 

• Invasive Species are native to an area. 
• Invasive species are prey to many animals.
• Invasive species have no predators.
• Invasive species keep the ecosystems in equilibrium.

Click on the map to help answer this question: What can we predict about the population of Feral Swine for the year 2016?

• There will be less feral swine in 2016 than there were in 1982.

• There will be more feral swine in 2016 than there were in 2010

• There were fewer feral swine in 2004 than 1982.

• There will be no change in feral swine population.

What caused the lionfish to end up in the Atlantic Ocean?

• The lionfish swam there from The Pacific Ocean.

• Pet owners dumped their unwanted fish into the ocean.

• Pet owners lost them and found them in the Atlantic Ocean.

• The lionfish migrate there every winter.

Invasive species alter the ecosystem by a___________in number quickly,this leads to _____ food for the native  species. 

• increasing  less
• decline  decreasing

Which of the following leads to a decrease in biodiversity?

• introduction of invasive species

• prevention of erosion

• ecological land use planning

• pollution control

Law of the 70's that protects endangered species in the U.S.

• Endangered Species Act

• CITES

• Lacey Act

• One Act Plays

An endangered species is

• One whose numbers are so small that it is at risk of extinction
  
• One whose not been spotted after many years.
• One whose numbers are abundant.

Presently, the biggest threat to biodiversity is;

• Asteriod strikes, such as what happened 65 million years ago and resulted in the extinction of the dinosaurs.

• Human population growth, because as population increases, so does the number of plants and animals it consumes, resulting in a decrease of those organisms.

• Habitat destruction, such as cutting down portions of tropical rain forest, which destroys the niches occupied by tropical organisms.

• The proliferation of zoos and botanical gardens, causing causing people to care less about preserving species in the wild because they are being cared for those in sanctuaries.