(UN) Chapter 3_Updated on Thursday, May 9, 2024

How do floods affect the water supply for humans?

• Water supply increases

• All stays the same

• Water supply decreases

Answer explanation

Floods decrease the water supply through the destruction of supply points, as well as sewage tanks and pipes. They can also mix clean water with dirty water or seawater, making it unsafe to drink. Rising sea levels make this problem even worse.

Droughts are also set to get worse with climate change. This will further threaten access to drinking water, even in many areas which are not normally dry

How many people will struggle for access to water by 2050?

• Around 2 billion

  
  

• Around 4 billion

• Around 6 billion

Answer explanation

This is more than half of the world’s current population!

As well as directly impacting drinking habits, reduced access to water puts increased pressure on farmers through their ability to water crops. Droughts and heatwaves have reduced cereal crop yields by 9-10% over the past few decades.

How is climate change expected to impact crop growth globally?

• It will increase crop yields in all regions.

• It will decrease crop yields in all regions.

• It will have varying effects depending on the local climate and crop type.

• It will only affect crops grown in Europe.

How will climate change impact heatwaves?

• Make them less frequent and less intense

• Make them more frequent and less intense

• Make them less frequent and more intense

• Make them more frequent and more intense

How much of the world’s population is projected to live in cities by 2050?

• One third

• Half

• Two thirds

Answer explanation

The majority of the world’s population will live in cities by 2050

What percentage of deaths attributed to climate change occur in low-income countries?

• 30%

• 50%

• 80%

• 99%

If we manage to limit global warming to ‘well below’ 2°C, it has been estimated that we could lose around 2.0% of global GDP. Roughly how much is this (USD in 2023)?

• ~ $2 trillion

• ~ $200 billion

• ~$2 billion

Which type of weather-related disaster costs the world the most money?

• Storms

• Floods

• Droughts

Answer explanation

Storms - including hurricanes, thunderstorms, and rainstorms contribute to 38% of the cost of disasters globally, because they can destroy houses, roads and other infrastructure. Hurricane Katrina alone cost the USA US$168 billion.

What effects of climate change could harm human health? Select all that apply.

• Increased heatwaves and dehydration

• Spread of disease

• Increased availability of antibiotics

• Air pollution

How will climate change affect the countries’ economies depending on their wealth?

• Climate change will affect all economies the same.

• Climate change will affect poor countries’ economies the most.

• Climate change will affect rich countries’ economies the most.