The range of the radar horizon dependson the height of the antenna and on the amount of bending of the radar wave.The bending is caused by diffraction and refraction. Diffraction is a propertyof the electromagnetic wave itself. Refraction is due to the prevailingatmospheric conditions.
Anaerobic bacteria, or anaerobes, are bacteria that do not need oxygen to live. In humans, these bacteria generally live in the gastrointestinal tract, but they may also be found in other places outside the body, including in the soil and water, in foods, and in animals.
The main difference between the two is the fact that aerobic bacteria require oxygen to remain alive, while anaerobic bacteria do not rely on oxygen for metabolic processes and survival. While aerobes are able to thrive in habitats that have abundant oxygen, anaerobes may die in the presence of oxygen.