Climate Change and Its Impact

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

• Past changes had more human intervention.

• Past changes were faster.

• Current changes are slower.

• Current changes are faster and habitats are fragmented.

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%

• 75%

• 50%

Which animal is mentioned as being at risk due to climate change?

• Polar bear

• Elephant

• Pika

• Kangaroo

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

• It has no effect on plants.

• It makes plants grow slower.

• It always increases crop yields.

• It only benefits weeds.

What happens to plants in a warmer environment with more carbon dioxide?

• They mature faster but with less plant matter.

• They build up more plant matter.

• They become immune to drought.

• They mature slower.

Which invasive species is mentioned as spreading due to warmer winters?

• Ivy

• Bamboo

• Kudzu

• Dandelion

What is the economic impact of kudzu on infrastructure?

• It has no economic impact.

• It costs about half a billion dollars annually.

• It saves money on landscaping.

• It generates revenue through tourism.

How do weeds respond to higher carbon dioxide levels compared to crops?

• They do not grow at all.

• They grow faster, up to three times faster.

• They grow at the same rate.

• They grow slower.

What is the estimated annual cost of climate change on wheat and maize losses since 1980?

• 1 billion dollars

• 5 billion dollars

• 3 billion dollars

• 10 billion dollars