The dangerous shark is just as rare as the nonaggressive shark. Obviously there are species which - simply due to their size - should only be approached with great caution, for body size is a problem when it comes to dealing with sharks.
A fever is a rise in body temperature. It's usually a sign of infection. The fever itself is generally harmless and probably helpful. Fevers usually don't need treatment. The average body temperature is 98.6 F (37 C).But normal body temperature can range between 97 (36.1) and 99 (37.2) or more.Your body temperature can vary depending on how active you are or the time of day. Generally, older people have lower body temperatures than younger people.evers usually don't need treatment. The average body temperature is 98.6 F (37 C). But normal body temperature can range between 97 (36.1) and 99 (37.2) or more. Your body temperature can vary depending on how active you are or the time of day.
You can take a temperature using the mouth (oral), anus (rectal), armpit (axillary), or ear (tympanic). But the temperature readings vary depending on which one you use, and you need an accurate body temperature to determine if a fever is present. The average normal oral temperature is 98.6Â°F (37Â°C) . 2  A rectal temperature is 0.5Â°F (0.3Â°C) to 1Â°F (0.6Â°C) higher than an oral temperature. 3  An ear (tympanic) temperature is 0.5Â°F (0.3Â°C) to 1Â°F (0.6Â°C) higher than an oral temperature.