Incidence and prevalence are terms commonly used in describing disease epidemiology. Incidence. Incidence is the rate of new (or newly diagnosed) cases of the disease. It is generally reported as the number of new cases occurring within a period of time (e.g., per month, per year).
Pictured: Incredible gravity-defying ant that can carry 100 times its body weight. This extraordinary image of an ant carrying 100 times its own body weight has scooped first prize in a science photography competition. The photo shows an Asian weaver ant hanging upside down on a glass-like surface and holding a 500mg weight in its jaws.
The total weight of all the ants on Earth is estimated to be equal to that of all the humans. Ants inhabit every continent on earth except Antarctica, Greenland and a few islands in Hawaii and Polynesia. They are so successful because of their ability to form organized societies and communicate with each other.