Sentence:  This means that such factors as the health of the parents , particularly the mother , their ability to provide their children with the necessities of life , the degree of population density of a country and the shortage of housing <WSD>facilities</WSD> may legitimately be taken into consideration in determining the number of offspring . 
Meaning of the word marked with <WSD> tags:  a building or place that provides a particular service or is used for a particular industry