Invasive Species

Which Animals are Invasive Species?

• Mountain Goats

• Tigers

• Large Mouth Bass

• Lionfish

What is an invasive species?

• A native (naturally found) species which are added to an area. 
• A non-native (not naturally found) species added to an area. 
• A keystone species in an environment
• none of the above

Invasive species alter the ecosystem by _____ in number quickly. This leads to _____ food for the native species.

• increasing, less

• increasing, more

• decreasing, less

• decreasing, more

Invasive species cause harm to the --- [choose 3]

• economy.

• atmosphere only.

• environment.

• health of organisms.

• water only.

TRUE or FALSE? Invasive species can be introduced to an ecosystem accidentally.

• True

• False

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

Scientists are not ______ of controlling every invader species because there are too many of them in too many places. 

• Alter
• Capable 
• invade
• Species 

What does the word Invade mean?

• To walk into a room and ask directions

• To move into and sit down quietly

• To move into and harm

• To stay put

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.