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.
One survey found 20,000 species of bacteria in 1 quart (about 1 liter) of seawater. Another approach to determining the quantity of bacteria in a sample is to use a technique called DNA reassociation.ven if costs fall by a factor of a trillion, there are so many microbes in soil that categorizing them in this way would be prohibitively expensive. Instead of sequencing entire genomes, bacterial surveys use snippets to distinguish between different species. This is more cost-effective than whole genome sequencing.