Other chickens walk around the bale browsing around the edges of the bale, and eating the alfalfa flakes that get scratched off onto the ground by the upper chickens. Alfalfa is a very nutritious food crop. Alfalfa sends it's roots deep into the soil.
Soil or Waste Stacks. A soil or waste stack (normally just called a stack) is a drainage pipe that passes through at least one story(floor to ceiling) as a drain pipe, this also includes any horizontal offsets. Every soil or waste stack will terminate in a stack vent that leads to outside air or a vent header.
Solid waste is materials that can not be decomposed. Hazardous waste is toxic material that can do harm to living beings and the environment. Describe the difference between an open dump, a sanitary landfill and a modern, secure, hazardous waste disposal site. Open dumps do not regulate what goes into their dumps. Chemicals and other liquids are able to run to the ground water. Sanitary landfills are disposal sites for non-hazardous solid waste that is spread in layers and compacted to the smallest practical volume. The sites are typically designed with floors made of materials to treat seeping liquids and are covered by soil as the wastes are compacted and deposited into the landfill.