Water Use and Sustainability Challenges

The video discusses sustainability challenges in agriculture and energy, emphasizing the need for new technologies. It highlights water usage, distinguishing between essential needs and commercial use, and stresses the inefficiency of water use in agriculture. The video concludes with the challenges of increasing population and decreasing arable land, underscoring water as a critical issue for the future.

What is one of the main issues in making agriculture sustainable?

• Pesticide use

• Soil erosion

• Lack of technology

• Water management

Why does the speaker believe we won't run out of fossil energy?

• New technologies will emerge

• Alternative energy is not viable

• We will reduce consumption

• Fossil fuels are infinite

How much water is needed daily for minimum hygiene?

• 50 liters

• 5 liters

• 10 liters

• 20-25 liters

What percentage of total freshwater withdrawal is used by households?

• 10%

• 20%

• 50%

• 70%

Which sector uses the most freshwater?

• Industry

• Agriculture

• Energy production

• Households

How much water is used per calorie if the calorie comes from an animal?

• 5 liters

• 1 liter

• 10 liters

• 20 liters

What happens to the water used by industry and households?

• It evaporates

• It is mostly returned

• It is lost forever

• It is absorbed by plants

Why is agricultural water use considered inefficient?

• Lack of irrigation systems

• Poor soil quality

• Water is often free

• Water is too expensive

What is the impact of inefficient water use in agriculture?

• Decreased food security

• Increased food prices

• More arable land

• Improved crop yields

What is a major challenge for humankind in the next 10 to 15 years?

• Water scarcity

• Population decline

• Energy shortages

• Technological stagnation