Classification of living things

Living things around us are grouped into two major categories, namely the world's plants and animals or flora or fauna. Plants and animals will each be grouped again into the classes are smaller. The classification is based on a lot or at least the existing equation. In plants, for example by the roots, trunk shape, form pertulangan leaves and so on. In animals based on the presence or absence of the spine, have wings or not, the number of legs and so on.