These small insects give the world something more important than honey: they provide us with pollination, which makes most of the plants in the ground to grow and give us the oxygen enough for us to breathe. It allows plants, flowers, trees and fruits there, which feed on other animals and humans. Unfortunately, the interaction of human with nature has caused the population of bees in the world to drop rapidly and it is estimated that they have already disappeared 250 billions of bees.

Today, when people think of bats, they immediately relate them with vampires. But really there is only a species of bats that actually feeds on blood, therefore there is no real reason to be afraid of them. In fact, bats have a positive influence on life on the planet. Bats are the main consumers of insects, they avoid the planet become infested all of these bugs.

This little friend is a living organism too small that lives underwater and is virtually unable to move by itself. Why is the plankton important? Because they are the reason why we all breathe. Through photosynthesis and other healthy appetites, plankton plays an important role to convert energy into oxygen and distribute it by the planet.

They may be our closest link when it's understanding human history, but in reality its ecological role is what really matters. In tropical and Subtropical climates, the primates are the key species. They work as gardeners of the forest, because they spread seeds by means of daily habits as eat and defecate. This is of great importance because tropical rainforests are those who influence the rains at the global level, therefore the trees that the primates help you grow, currently function as sustainers of life on Earth.

Butterflies help to predict changes in the climate. Studies indicate that the European butterflies are constantly moving northward, to a large extent due to the change in temperatures. Butterflies prefer temperate climates and studies show that they are leaving earlier than normal to the North. They provide a way of studying the effects of climate change and great ideas of how prevent it.