Understanding the Greenhouse Effect and Human Impact on Climate Change

The video explains the greenhouse effect, where greenhouse gases like water vapor, carbon dioxide, and methane absorb and re-emit infrared radiation, warming the Earth's atmosphere. It highlights the importance of this effect for sustaining life. The video discusses evidence suggesting human activities, such as burning fossil fuels and intensive farming, increase greenhouse gas concentrations, leading to climate change. It presents scientific consensus on the link between human activity and rising temperatures, and potential consequences like extreme weather and rising sea levels.

What role do greenhouse gases play in maintaining Earth's temperature?

• They increase the Earth's albedo.

• They block ultraviolet rays from the sun.

• They absorb and re-emit infrared radiation.

• They reflect sunlight back into space.

What evidence suggests that human activities are affecting the Earth's climate?

• A stable mean temperature of the atmosphere over the past millennium.

• A decrease in global sea levels.

• A significant increase in CO2 concentration and temperature over the last 200 years.

• A reduction in the frequency of extreme weather events.

Which human activities are known to increase methane concentration in the atmosphere?

• Recycling and waste management.

• Solar panel installation and wind farming.

• Intensive farming and fossil fuel extraction.

• Deforestation and urbanization.

What are some potential effects of climate change mentioned in the video?

• Increased biodiversity and stable weather patterns.

• Cooling of the Earth's atmosphere and reduced CO2 levels.

• Decreased sea levels and reduced disease spread.

• Extreme weather events and rising sea levels.

How might climate change affect the spread of diseases?

• By eliminating tropical climates altogether.

• By creating conditions more favorable for tropical pathogens.

• By making climates less favorable for pathogens.

• By reducing the habitats of pathogens.