It is a relatively simple concept. We provide people who are homeless permanent housing first, along with supportive services, instead of placing them into shelters. This means housing becomes the first step in moving out of homelessness, not the last. Currently, we are using shelters as long-term housing. This is expensive.
A catena (Latin: chain) is a chain of related soil types, known as facets, down a uniform slope. The term was introduced by the soil scientist G. Milne in 1935, working in Africa, as the sequence of soils that ran from the crest of a hill to the floor of the swamp in the valley below it.
The term melena is used to describe a black, tarry appearing feces, which occurs due to the presence of digested blood in the intestines, or to internal bleeding that has passed into the intestine. Melena is typically seen due to bleeding in the upper portion of the gastrointestinal tract. It has also been seen in dogs after they have ingested a sufficient amount of blood from the oral cavity or respiratory tract. It is not a disease in itself but a symptom of some other underlying disease.