Land Snails are not halal to eat in the Hanafi school, snails are judged to be impure and therefore impermissible to eat. Such snails are impure because they are considered pests and also because they are bloodless creatures (rather than blood, they have hemolymph, which is found in spiders and crustaceans). These qualities render them from al-khaba’ith (impure, foul, or evil things) that Allah the Exalted has prohibited in the Qur’an. [7:157]. Imam Nawawi (Shafi'i) said it is haram (land snails) and said this is a view of the majority of scholars. [al-Majmu' sharh al-Muhadhdhab]
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Birth Rate
Now, this might seem very obvious to you, but when babies are born, it results in a population change! Social scientists who study this trend have some key terms, though. First, the fertility rate in a country refers simply to the number of children born. This is different from the fecundity rate, which is the number of children who could be born in a given society. In other words, fecundity is the biological capacity of humans to produce children.
Death Rate
Just as when babies are born, when members of a society die it changes the population. This might be a bit morbid to think about, but scientists refer to this as the mortality rate, which is simply the number of deaths that occur in a society. This is usually calculated by looking at the number of deaths per 1,000 individuals. In the United States, for example, the death rate is 8/1000 people. Just like birth rate, the death rate in a country depends on things such as availability of quality medical care, disease, war, or famine.
Migration Rate
One important factor that accounts for a change in population is migration. At the broadest level, migration refers to movement; it's the flow or circulation of people in societies. There are two kinds of migration: emigration and immigration. Emigration means to leave one's own country for another. Immigration means to enter into a country other than one's own.
Distress is a form of Negative stress
Must be provided to maintain temperatures of potentially hazardous food during transportation at 140°F or greater for hot foods and 41°F or less for cold foods. If food temperatures cannot be maintained then mechanical refrigeration or hot holding equipment is required.
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