Native & Invasive species 4F/4G - Nicholson

Species that are indigenous (naturally grow) in an area with no human intervention

• invasive species

• native species

• all species that live in an ecosystem

resources that organisms must share and limits their growth, population size creating competition 

• adaptation 
• limiting factor
• natural predator
• evolution

an organism that has been introduced into an ecosystem and creates competition for resources with the organisms that live there

• native species
• succession
• invasive species
• evolution

An organism that hunts prey in a food chain or web that occurs naturally 

• natural predator
• prey
• native species
• evolutio 

Example of limiting factor

• mate
• food, water, shelter
• air
• money

invasive species

• organism that naturally grows in an ecosystem without human intervention

• organism that is brought (introduced) to a new country on purpose/accident

• changes over time

Not a role of an native species

• preserves the gene pool of an ecosystem

• requires less maintenance

• provides a habitat for other organism

• decreases biodiversity in an ecosystem

Invasive species are usually ______________ to their new environment.

• beneficial

• harmful

• neutral

• introduced on purpose

Extinction can be caused by

• Rapid changes in climate

• A comet

• invasive species

• all are correct

Extinction is when

• there are only a few individuals in a species left

• there are no individuals in a species left

• there are a lot of organisms in a population

• species are dying at a rapid rate