…ing electricity consumption by 50 percent, after making a garden on the roof (roof garden). Although the roof garden is just a tomato plant, which is placed in the pot to cover the entire roof. Another advantage, the hospital did not have to buy tomatoes anymore. In addition to the shade, the garden on the roof (roof garden) can also be used to absorb toxic gases. For example, bamboo or palm can absorb formaldehyde gas and gasoline. While the lil…

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