Question

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Answer 1

Answer:

1. It is very important to sow seeds at the correct distance from each other because plants need some space to grow up and to stretch their branches and they will get sufficient amount of sunlight and nutrients and their will be no competition for food and nutrients.
2. Swine influenza is an infection caused by any one of several types of swine influenza viruses. Swine influenza virus (SIV) or swine-origin influenza virus (S-OIV) is any strain of the influenza family of viruses that is endemic in pigs.[2] As of 2009, the known SIV strains include influenza C and the subtypes of influenza A known as H1N1, H1N2, H2N1, H3N1, H3N2, and H2N
3. Signs and symptoms

• In pigs, a swine influenza infection produces fever, lethargy, sneezing, coughing, difficulty breathing and decreased appetite.[8] In some cases the infection can cause miscarriage. Although mortality is usually low (around 1–4%),[2] the virus can produce weight loss and poor growth, causing economic loss to farmers.[8] Infected pigs can lose up to 12 pounds of body weight over a three- to four-week period.[8] Swine have receptors to which both avian and mammalian influenza viruses are able to bind to, which leads to the virus being able to evolve and mutate into different forms.[9] Influenza A is responsible for infecting swine, and was first identified in the summer of 1918.[9] Pigs have often been seen as "mixing vessels", which help to change and evolve strains of disease that are then passed on to other mammals, such as humans.[9]

1. Prevention

• Prevention of swine influenza has three components: prevention in pigs, prevention of transmission to humans, and prevention of its spread among humans. Proper hand washing techniques can prevent the virus from spreading. Avoid touching the eyes, nose, or mouth. Stay away from others who display symptoms of the cold or flu and avoid contact with others when displaying symptoms

1. history

• Swine influenza was first proposed to be a disease related to human flu during the 1918 flu pandemic, when pigs became ill at the same time as humans.[63] The first identification of an influenza virus as a cause of disease in pigs occurred about ten years later, in 1930.[64] For the following 60 years, swine influenza strains were almost exclusively H1N1. Then, between 1997 and 2002, new strains of three different subtypes and five different genotypes emerged as causes of influenza among pigs in North America. In 1997–1998, H3N2 strains emerged. These strains, which include genes derived by reassortment from human, swine and avian viruses, have become a major cause of swine influenza in North America. Reassortment between H1N1 and H3N2 produced H1N2. In 1999 in Canada, a strain of H4N6 crossed the species barrier from birds to pigs, but was contained on a single farm.[64]

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Answer 2

Answer:

sorry jd not know The answer but I want to give you a compliment

your writing is just amazing, awesome and incredible .... no one can copy you.