Climate Change and Its Impact

What is a significant difference between past climate changes and the current one?

• Current changes are slower.

• Past changes were more severe.

• Current changes are faster and habitats are fragmented.

• Past changes were caused by humans.

What is the primary cause of the sixth extinction?

• Volcanic eruptions

• Asteroid strikes

• Human activities

• Natural climate cycles

What percentage of coral reefs have been lost in the past 30 years?

• 10%

• 25%

• 50%

• 75%

Which mammal is at risk due to climate change?

• Polar bear

• Pika

• Elephant

• Kangaroo

What is a common misconception about carbon dioxide and plant growth?

• It only benefits weeds and pests more than crops.

• It always benefits plant growth.

• It has no effect on plants.

• It makes plants grow slower.

What is Kudzu, and why is it spreading?

• A fish, spreading due to overfishing.

• A mammal, spreading due to habitat loss.

• A vine, spreading due to warmer winters.

• A type of coral, spreading due to ocean currents.

How has climate change affected food supplies since 1980?

• Increased food production

• No significant impact

• Caused losses in wheat and maize

• Improved crop resilience

What is the estimated cost of climate change on wheat and maize losses annually?

• $1 billion

• $3 billion

• $5 billion

• $10 billion

What is the main risk of rapid climate change for ecosystems?

• Improved species adaptation

• Altered connections and species risks

• Increased biodiversity

• Stable ecosystems

What is the key message about the interconnectedness of ecosystems?

• Species are independent of each other.

• Ecosystems are simple and predictable.

• Connections are intricate and at risk.

• Climate change has no impact on ecosystems.