How do I combine Fire and Earth in Doodle God?

In Doodle God, combining Fire and Earth is a straightforward process that results in the creation of Lava. To achieve this, follow these steps. First, ensure you have unlocked both Fire and Earth. Fire is one of the four basic elements you start with, along with Air, Water, and Earth. If you haven't unlocked Earth yet, you can create it by combining Air and Water to make Mud, and then combining Mud with Fire to create Earth. Once you have both Fire and Earth, simply drag the Fire element onto the Earth element or vice versa in the game interface. This will combine them to form Lava. Lava is a key element that can be used in further combinations, such as mixing it with Air to create Stone or with Water to create Steam and Stone. This combination is essential for progressing in the game, as it unlocks new elements and helps you advance through different categories. Experimenting with Lava and other elements will lead to discovering more complex recipes and expanding your collection of elements.