A compost bin is a [?] in which you can put [?], [?] and kitchen litter and add worms and bacteria to [?] them. In a compost bin, your vegetable scraps and leftovers turn into [?], or in other words, a rich that helps plants ! If you have a flower bed or vegetable garden, you can easily try this form of recycling--turning garbage into nutrients--by yourself. Very conveniently, by [?], you can take care of two tasks with one move: Get rid of kitchen and make your own fertilizer for free.
In America, worm composting has recently become popular--through the mail, you can order a jar of [?]. And since America is such a huge country, a lot of these jars are delivered by air. Earthworms flying all over the country! What a funny thought!