How do window farms increase Food Security

Window Farms are so important for food security. They increase food security because they use very little space. Today, our planet is running out of space at a very fast rate. Also, it is very cheap to build. The rich and poor can build window farms. You can find many household items that can be useful for a window farm. Poor families have a very convenient and cheap way of producing their own food when having a window farm. 

 These window farms below are simple to make and probably cost nothing as you can see they are made out of recycled bottles.

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