What is an introduced species that has a negative impact on an ecosystem?

• Invasive species

• Keystone species

• Endangered species

What is a species that is brought to a place by humans and becomes part of the local ecosystem without causing harm?

• invasive species

• introduced species

• keystone species

• native species

What is an organism that has been part of an ecosystem for a long time?

• invasive species

• introduced species

• keystone species

• native species

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.

Which is an NOT an example of BIOLOGICAL control of an invasive species?

• Building a wall or barrier to prevent new species from entering.

• Using another organism to eliminate the invasive species

• Introducing a disease that would kill off the invasive species

• Putting invasive species and their predators in the same area

Which is an NOT an example of MANUAL control of an invasive species?

• Hand pulling weeds out of the flower beds to control their spread

• Removal of the eggs out of the nest of an invasive bids species

• Flooding an area that has become overrun with invasive organisms

• Putting invasive species and their predators in the same area

Which is an NOT an example of CHEMICAL control of an invasive species?

• Using a kind of poison to kill an invasive species

• Mowing or cutting down invasive plants

• Spraying insecticide on invasive species that are insects

• Applying herbicide to plants that are invasive species.

Invasive species grow quickly due to the lack of predators, this leads to a decline or extinction of the native population. True or false? 

• false
• true

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 natural predators in their new environment.

• Invasive species keep the ecosystems in equilibrium.

The primary cause of invasive species introduction is

• too much food

• human actions

• weather events

• asteroids