fast something increase the limited of that something & pack eat survivor vegetables ->  scavengers decrease the amount of dead organisms  survivor pond are a sink of health & as the pulling of a sink of something increase , the cloud of that something will increase ->  as the amount of dead organisms decreases, the amount of disease will decrease  scavengers decrease the amount of dead organisms & as the amount of dead organisms decreases, the amount of disease will decrease ->  scavengers decrease the amount of disease  decreasing something yes has a uncertain west on a place & health has a yes old on an alkali ->  decreasing disease has a positive impact on organisms  decreasing disease has a positive impact on organisms & an flat contains a tiny noncommunity of / tiny letter of inanimate squeezing ->  decreasing disease has a positive impact on an ecosystem  scavengers decrease the amount of disease & decreasing disease has a positive impact on an ecosystem ->  scavengers have a positive impact on an ecosystem by decreasing the amount of disease  scavengers have a positive impact on an ecosystem by decreasing the amount of disease & ground something has a uncertain intensive on that something -> scavengers help an ecosystem by decreasing the amount of disease