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. This process is crucial for maintaining temperatures that support life. However, human activities, such as burning fossil fuels and intensive farming, have increased CO2 and methane levels, leading to a rise in atmospheric temperatures. Scientific consensus suggests these changes are linked to human actions, potentially causing adverse climate effects like extreme weather and rising sea levels.

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

• They absorb and re-emit infrared radiation.

• They block ultraviolet rays from the sun.

• They reflect sunlight back into space.

• They increase the Earth's albedo.

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

• A decrease in global sea levels.

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

• A reduction in the frequency of extreme weather events.

• A decrease in the Earth's average temperature.

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

• Solar panel installation and wind farming.

• Intensive farming and fossil fuel extraction.

• Deforestation and urbanization.

• Recycling and waste management.

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

• Decreased sea levels and reduced disease spread.

• More frequent solar eclipses and volcanic eruptions.

• Increased biodiversity and stable weather patterns.

• Extreme weather events and rising sea levels.

How do human activities related to transport and electricity production affect the atmosphere?

• They cool the atmosphere by reflecting sunlight.

• They reduce the concentration of greenhouse gases.

• They increase carbon dioxide concentration through fossil fuel burning.

• They have no impact on the atmosphere.