What causes the Earth to experience different seasons?

How long does it take for the Earth to complete one orbit around the Sun?

What is the significance of the Earth's 23.5-degree axial tilt?

Why is it summer in the Northern Hemisphere when it's winter in the Southern Hemisphere?

What are solstices, and when do they occur?

What are equinoxes, and what happens during them?

How does the Earth's orbit affect the seasons?

What role does the Sun's angle play in seasonal temperature changes?

Why do the poles experience extreme variations in daylight during the year?

How do the seasons impact ecosystems and animal behaviors?