Climate Change & Invasive Species

What is one major consequence of climate change on ecosystems?

• Reduced global temperatures

• Improved resistance to destructive organisms

• Weakened ecosystems vulnerable to infestations

• Increased biodiversity in forests

How do pine beetles harm trees in the Rocky Mountains?

• By blocking the trees' water and nutrient systems with fungus

• By spreading diseases through the soil

• By eating the leaves of the trees

• By cutting off the trees' roots

What is the origin of the emerald ash borer, and how does it damage trees?

• It was introduced from Africa and damages trees by cutting off their roots.

• It is native to Europe and damages trees by spreading fungus.

• It was introduced from Asia and damages trees by feeding on their inner bark.

• It is native to North America and damages trees by eating their leaves.

Why has the emerald ash borer population increased in the U.S.?

• Due to milder winters and drier conditions

• Because of colder winters and wetter conditions

• Due to the absence of predators

• Because of increased rainfall and flooding

What invasive species is altering the Sonoran Desert ecosystem?

• Purple loosestrife

• Kudzu

• Buffelgrass

• Japanese knotweed