A beautiful and wonderful world

The winged hands, the only mammals, have mastered the art of waving flight. Their front extremities are transformed into wings, elongated bones of fingers, like spokes, support the eardrum stretched between the front and hind legs and tail. The front finger of the wing is free from the membrane and ends with a chain claw used for climbing. In the skeleton of the arm wings, as in birds, there is a keel to which powerful breast muscles are attached. ...THE BEHAVIOR OF THE HAND WINGS... Winged Hand-wings are a very large group of about 1,000 species...

The ferns appeared on our planet at about the same time as the planetary and horsetail-shaped ferns and have experienced their heyday in the past geological epochs. In the Carboniferous period, for example, there were extensive forests of tree fern thickets, only a few of which have survived to this day. Even today, however, the ferns are still numerous, with around 300 genera and more than 10,000 species. FERN SPECIES AND SHAPES Ferns are very widespread and can be found in the temperate zone, and in the tropics, and in the Arctic, they are not present only in very arid areas of the planet...

Mighty and graceful. Sleek and fearless predator. The biggest and strongest cat on the planet is undoubtedly a tiger. An avid Lonely Hunter can rightfully wear the crown of the king of animals. His bright royal mantle is an excellent outfit, a working suit and good protection from heat and cold...

Approximately one-third of all bird species periodically move from wintering grounds to nesting grounds, i.e. make seasonal migrations. As a result, birds can live in areas with pronounced seasonal climate change, where cold, harsh winters replace the summer and have even mastered tundra areas, where they are provided with plenty of food in summer, but most of them cannot live in winter. SEDENTARY AND MIGRATORY BIRDS All birds can be divided into 3 large groups in an effort to change places. Sedentary birds spend all year round near nesting sites...

Doesn't it scare you that there are creatures on the planet that are so insignificant in size, but that stand next to a person in terms of intellectual development? They have a complex system of communications, based on the exchange of chemical elements - pheromones. This interaction helps to find food and carry out the delivery of food to the colony. They overpower a larger victim, kill, nest, and take to the nest due to their ability to lift up the weight 50 times their own! Just imagine: a person...