# Living together

Lichens are fungi and algae in one body. Gut bacteria help digest food. Mitochondria in our cells began as separate living things, as Margulis argued in the 1960s. Cooperation runs deep in the history of life.

Connects to:
- [Trust and cooperation](https://mapideas.org/i/so_trust)
- [What is a living thing?](https://mapideas.org/i/q_x_living)

Sources:
- [Wikipedia: Symbiosis](https://en.wikipedia.org/wiki/Symbiosis)
- [Wikipedia: Endosymbiont](https://en.wikipedia.org/wiki/Endosymbiont)

Source: https://mapideas.org/i/li_symbiosis · open on the map: https://mapideas.org/#li_symbiosis