what is good material to use for compost
Carbon is the most abundant element in compost (usually about one half of the total mass). Nitrogen is also present in compost, but in much smaller quantities (usually 1 to 2 percent). The ratio of carbon to nitrogen (C:N) is a common index used for assessing feedstocks and the maturity of any given compost. Nitrogen becomes more concentrated as carbon in organic materials is broken down and liberated as carbon dioxide.