Hint for permaculture escape room card 2

2. Catch and store energy 

Energy can be interpreted broadly: Running water, the sun that allows photosynthesis to take place in plants, the money in our economy or the energy we receive from eating the produce of our vegetable garden. It's this energy that keeps a system alive and evolving. Permaculture suggests you catch as many of these diverse energy flows as possible.

For this card: Water and Nitrogen are emphasized as being important elements. Think chemistry here!

The small lines on the sign ( _______ ____ )  will also give you a hint, as the solution is rather short.

For the answer key, select the text below.

H2O N2