In a landfill, decaying organic matters can react with other materials and create toxic leachate that may contaminate nearby streams or groundwater.
(decaying organic matters; create; toxic leachate that may contaminate nearby streams or groundwater) (toxic leachate; may contaminate; nearby streams or groundwater) (decaying organic matters; can react; with other materials; L:In a landfill)
decaying organic matters toxic leachate decaying organic matters
create may contaminate can react
toxic leachate that may contaminate nearby streams or groundwater
nearby streams or groundwater
with other materials L:In a landfill