As a result, your immune system attacks healthy cells. Depending on the type, an autoimmune disease can affect one or many different types of body tissue. It can also cause abnormal organ growth and changes in organ function.There are as many as 80 types of autoimmune diseases.s a result, your immune system attacks healthy cells. Depending on the type, an autoimmune disease can affect one or many different types of body tissue. It can also cause abnormal organ growth and changes in organ function.
The diet of pelicans usually consists of fish, which can be up to 30 cm (1 ft) long, but amphibians, turtles, crustaceans and occasionally birds are also eaten. Aquatic prey is most commonly taken at or near the water surface.
Pigeons are scavengers, it'll eat anything, like leftovers, seeds, and even insects! They are adapted to living in urban areas, if you look at their beaks carefully you willâ¦ see it's sharp and pointed and get tiny leftovers. Anything it believes it can eat. Pigeons alternatively known as 'Rats with wings'. Scavengers. These birds would eat most types of food and any object it thinks looks like fâ¦ood. They have greedy traits and do not fear humans. Also they are not very bright and do not seem to learn. I saw pigeon eatting corn.