Efecto invernadero

The transcript explains how the temperature on Earth's surface and in the lower atmosphere is higher due to factors beyond just sunlight, primarily the greenhouse effect. Without this effect, the average surface temperature would be around -19 °C.

What causes the temperature on the Earth's surface to be higher than it would be without the greenhouse effect?

How does the greenhouse effect influence the temperature in the lower layer of the Earth's atmosphere?

What is the primary heating mechanism for the Earth's surface mentioned in the text?

Explain the role of sunlight in the heating of the Earth's surface.

What would the average temperature on the Earth's surface be without the greenhouse effect?