Ecosystems, Population Growth, and Sustainability

The video explores Earth's biodiversity and the impact of human population growth. It discusses Malthus's theory on population growth outpacing resources, leading to potential crises. The video examines preventative and positive checks on population and critiques of Malthus's ideas, highlighting human innovation. It emphasizes the importance of sustainable practices to balance population needs with environmental health.

What is the projected global population by the year 2050?

• 10 billion

• 11 billion

• 9 billion

• 8 billion

What was the main observation at the heart of Malthus's theory?

• Population growth will always match resource growth

• Population and resource growth are unrelated

• Population growth will always outstrip resource growth

• Resource growth will always outstrip population growth

According to Malthus, how does population grow compared to food production?

• Both grow arithmetically

• Population grows geometrically, food grows arithmetically

• Population grows arithmetically, food grows geometrically

• Both grow geometrically

What are the two types of checks Malthus identified to balance population growth?

• Economic and social checks

• Natural and artificial checks

• Preventative and positive checks

• Biological and technological checks

Which revolution led to unprecedented increases in food production in the 20th century?

• Digital Revolution

• Industrial Revolution

• Green Revolution

• Transportation Revolution

What is one of the key criticisms of Malthus's theory?

• He ignored technological advancements

• He overestimated human ingenuity

• He focused too much on food production

• He underestimated human ingenuity

What is vertical farming?

• Growing crops in vertical layers

• Growing crops in horizontal layers

• Growing crops in open fields

• Growing crops in greenhouses

What is the main goal of sustainable practices?

• To reduce technological advancements

• To deplete natural resources

• To increase population growth

• To balance population growth with resource management

What is one way to reduce our carbon footprint?

• Expand urban sprawl

• Invest in renewable energy

• Ignore climate change

• Increase fossil fuel usage

What is the importance of protecting ecosystems?

• It is only an environmental issue

• It is a matter of survival for all species

• It has no impact on humans

• It is only important for animals