vermicomposter and compost worms. vermicomposter schematic , worm composting. recycling organic waste. sustainable living,

agricultural agriculture background box compost composting concept design drawn dung earthworm ecology environment environmentally farm farming fertile fertilizer food fruits garden gardening green ground growth hand heap household humus illustration isolated kitchen manure natural nature nutrient organic plant processing recyclable recycle scraps soil vector vegetables vermicompost vermicomposter waste worm zero