The sun and moon don't work together to "survive" in the sense that living organisms do. They are celestial bodies, not life forms. However, they do have a complex and interconnected relationship that plays a vital role in the Earth's ecosystem and our existence.

Here's a breakdown of their relationship:

* The Sun provides the energy: The sun is a star that provides Earth with light and heat, making life possible. It fuels photosynthesis in plants, drives weather patterns, and warms our planet.

* The Moon influences tides: The moon's gravity pulls on the Earth's oceans, creating the tides. This is essential for marine ecosystems and coastal communities.

* The Moon stabilizes Earth's axis: The moon's gravitational pull helps stabilize Earth's axis of rotation, preventing dramatic shifts in our climate.

* The Moon provides light at night: While the moon doesn't produce its own light, it reflects sunlight, providing illumination during the night. This allows nocturnal animals to navigate and hunt.

In summary, the sun and moon have a symbiotic relationship. The sun provides the energy for life, while the moon influences tides and stabilizes Earth's axis, both of which are crucial for our planet's ecosystem.