Human Impact on Ecosystems and Biodiversity

The video tutorial by Mr. Kite introduces environmental science, focusing on ecosystem services and environmental indicators. It covers five major indicators: biodiversity, extinction rates, food production, global temperature and CO2 levels, and human population growth. The tutorial explains how these indicators help assess ecosystem health and the impact of human activities on the environment. It emphasizes the importance of understanding these concepts for sustainable development.

What is an ecosystem service?

• A method of measuring biodiversity

• A natural process that benefits humans and is costly to replicate

• A service provided by humans to the environment

• A type of environmental pollution

Which type of biodiversity refers to the variety of genes within a population?

• Species biodiversity

• Genetic biodiversity

• Ecosystem biodiversity

• Global biodiversity

Which type of biodiversity is concerned with the variety of ecosystems on Earth?

• Genetic biodiversity

• Species biodiversity

• Ecosystem biodiversity

• Global biodiversity

What does a high extinction rate typically indicate?

• A healthy ecosystem

• A stable climate

• A problem within the planet

• An increase in biodiversity

What is the background extinction rate?

• 100 species per year

• 1 species per year

• 5 to 10,000 species per year

• 10 species per year

How does increased food production affect ecosystems?

• It decreases the human population

• It has no impact on the environment

• It can lead to habitat loss and soil degradation

• It always improves ecosystem health

What is the relationship between CO2 levels and global temperatures?

• CO2 levels only affect local temperatures

• CO2 levels have no impact on global temperatures

• Higher CO2 levels generally lead to higher temperatures

• Higher CO2 levels generally lead to lower temperatures

What is the predicted global human population by the year 2100?

• Less than 5 billion

• Over 20 billion

• Between 8 and 10 billion

• Between 8 and 10 million

What is a major consequence of a growing human population?

• Increased resource depletion and pollution

• Decreased demand for resources

• Stabilized global temperatures

• Reduced biodiversity

What is a key goal of the UN regarding human development?

• To reduce the global population

• To decrease biodiversity

• To raise people to a higher standard of living

• To increase resource consumption