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How to make a "Year-Round Self-Sustaining Greenhouse" no matter where you live in America.You’ll also find out how to make a year-round self-sustaining greenhouse no matter where you live in America.You can place it on the south side of your house. We’ll also show you how to both collect and retain heat through the night, what materials to use, how to insulate it, the best angles for your area, how to get maximum glazing, how to ventilate it… and anything else you can think of.Learn more https://the-prepper-survival.blogspot.com/p/the-best-angles.html