Characteristics. 1  Closed pockets of tissue that can be filled with fluid or pus. 2  Can appear anywhere on the skin. 3  Smooth to the touch; feels like a pea underneath the surface. 4  Slow growing and generally is painless and benign. 5  Only needs attention if it becomes infected or inflamed.
It has long been recognized and documented that insects are the most diverse group of organisms, meaning that the numbers of species of insects are more than any other group. In the world, some 900 thousand different kinds of living insects are known. This representation approximates 80 percent of the world's species. The true figure of living species of insects can only be estimated from present and past studies.
Difficult to put an exact number on the amount - however... There are roughly 7 billion people on the planet, and insects outnumber humans by at least 1000 to 1. As far as sâ¦pecies, there are up to 10 million species of insects, and many more bug-type animals in the centipede and arachnid families. 2 people found this useful.