1 Outdoor air pollution can cause ongoing throat irritation. Indoor pollution â tobacco smoke or chemicals â also can cause a chronic sore throat. Chewing tobacco, drinking alcohol and eating spicy foods also can irritate your throat.  Muscle strain.
Biosecurity is key to productive aquaculture systems. Biosecurity encompasses all measures designed to prevent diseases from occurring and from spreading by isolating, as much as possible, animal farm populations from external contamination. Recurring or prolonged contact with external environments (water, sediment, wildlife) favors the development of new diseases.
The Mark and Recapture Technique. By far the most popular way to measure the size of a population is called the Mark and Recapture. Technique. This technique is commonly used by fish and wildlife managers to estimate population sizes before. fishing or hunting seasons. The mark and recapture method involves marking a number of individuals in a. natural population, returning them to that population, and subsequently recapturing some of them as a basis for. estimating the size of the population at the time of marking and release. This procedure was first used by C.J.G.