Invasive Species and Their Impact

The video explains invasive species as non-native organisms that cause harm to ecosystems, economies, or human health. It highlights their threat to biodiversity, historical introduction by settlers, and modern spread through global travel and transportation. Invasive species occupy habitats needed by native species and can spread via transportation corridors, equipment, and shipping channels, posing significant threats to ecosystems.

What is an invasive species according to the National Invasive Species Information Center?

• A species that is beneficial to the ecosystem

• A species that is only found in zoos

• A non-native species that causes harm

• A native species that adapts to new environments

What is the impact of invasive species on human health?

• They can cause harm to human health

• They have no impact on human health

• They only affect animals

• They improve human health

Why are invasive species a threat to biodiversity?

• They help in balancing the ecosystem

• They create new habitats for native species

• They have no impact on the ecosystem

• They occupy habitats needed by native species

How did North American settlers contribute to the spread of invasive species?

• By importing and cultivating invasive plants

• By creating protected areas for native species

• By exporting native plants

• By destroying invasive species

What role does international travel play in the spread of invasive species?

• It helps in identifying invasive species

• It accelerates the spread of invasive species

• It has no effect on invasive species

• It prevents the spread of invasive species

What is a common way invasive species are introduced into new areas?

• Through genetic engineering

• By deliberate conservation efforts

• As stowaways in cargo

• Through natural migration

How do transportation corridors contribute to the spread of invasive species?

• They facilitate the movement of invasive species

• They act as barriers to invasive species

• They are irrelevant to the spread of invasive species

• They help in the conservation of native species

Which equipment can spread the seeds of invasive plants?

• Computers and smartphones

• Tractors and lawnmowers

• Bicycles and skateboards

• Boats and submarines

What is a significant threat to natural biodiversity besides invasive plants?

• Water and air

• Rocks and minerals

• Fungi and insects

• Sunlight and temperature

What can fungi and insects do to ecosystems?

• Have no impact

• Cause widespread destruction

• Enhance biodiversity

• Support native species