Our blood is red because it contains red blood cells that turn red because of the hemoglobin protein. It consists of four almost identical protein chains, each containing a heme group with a central iron atom. Hemoglobin carries oxygen throughout the body. If hemoglobin enters into a connection with oxygen, oxyhemoglobin is the result.
12. Elephants: 500 dead The elephant is by far the largest animal on this list. He has conquered it because of his temperament and urge to protect, not because he is so bloodthirsty. An article from National Geographic from 2005 estimates that 500 people are killed by an elephant every year.
Australian researchers charted the structure of a protein in the platypus milk that can help us fight resistant bacteria. The protein curls in a unique way, and that probably determines the antibacterial effect. The bacterial poison in the milk probably developed because the platypus has no nipples, like other mammals.
A young dragonfly has freed itself from its doll. The jungle around is quiet and is not disturbed by humming insects, but that changes as soon as the wings of the slender animal have dried up in the sun. The prehistoric giant insect rises from the ground and makes the first flight of world history.
1. Roundworm 10 trillion specimens. That there are so many roundworms is primarily because they occur in every environment, including the sea. According to some studies, roundworms make up about 80 percent of all animals on earth. Shutterstock 2. Insects 10 trillion specimens. Although the insects rank second in absolute numbers, they include more species than any other group: at least one million.
When they stagger, they look like little candy bears. But don't underestimate them - the bear animals. Just like the superheroes you know from comics, they hide behind a little exciting appearance, but secretly they have supernatural powers. Bears are rock hard.
More than 3000 years ago, Chinese scholars were already convinced that animals can predict natural disasters. If the scholars were watching the behavior of wild and tame animals - including fish, reptiles, birds, mammals, and sometimes insects - they would be warned hours, days, or even weeks in advance of an earthquake or volcano eruption.
The condition of the heart and brain determines when someone is medically and legally dead, but biologically, death occurs in a number of stages. Scientists from University College London in Great Britain investigated the processes that take place in cells as they age and die.
Although lakes look idyllic in the spring, a harsh reality can be hidden beneath the surface. Some animals become fierce cannibals when food is scarce. Research from the University of North Carolina in the US shows that this adaptability can be a strong driving force in evolution.
The metabolism and therefore the hunger of animals depends on the size, body temperature and activity. Small, active animals usually eat more in proportion to their bodies than large, slow animals. A shrews eat about its own weight per day, while an elephant only gets 5 percent of its body weight.
Abuse of the situation: Catfish hatch eggs by other species The catfish in Lake Tanganyika arranges free childcare with another species of fish, the cichlid, which can be seen here. When the cichlid lays its eggs, the catfish lays its eggs quickly in the same place.
Pure temptation Vogel builds a radiant hut for its chosen One. The arbor bird builds its love nest of berries, leaves, straws and plastic caps. Many bird males impress the females with their beautifully colored feathers. The arbor bird is not the most beautiful compared to other species, but he uses his aesthetic sense to build huts where the act of love can take place.
If you're digging in the garden and you accidentally cut an earthworm in half, then you have two - that's the myth. But that kite doesn't fly. Cutting is deadly Usually a worm that you cut will just die, but the ends can still twist for a while, making it look like the two parts are still alive.
A dog's tail has two main functions. The first is balance: it helps the dog to stay in balance while running and jumping. For example, if the animal suddenly wants to change direction, it uses its tail as a kind of counterweight to turn its abdomen. The second function is communication.
Our earth can easily accommodate ten billion people and at the same time be a safe home for all the animals that currently live there. That is the conclusion of a major investigation. Yet more than 12,000 animal species are threatened. However, this requires a well-considered budget, and an international committee of scientists, economists and other experts has recently drawn it up for the UN.
The petri dishes in a laboratory of the Russian Academy of Science are teeming with roundworms. The worms are fed and coli bacteria, and at first glance you would not say that they are thousands of years old. Old worms come to life The worms come from two drill samples from Northeast Siberia.
Bears are the toughest animals on earth. They look almost cute and look like a cross between a vacuum cleaner bag and a rubber bear. But it has long been known that you should not underestimate bear animals. In spite of their friendly appearance and their small size of a maximum of one and a half millimeters, little bear animals have faced extreme circumstances.
They destroy the fields and multiply as - well - wild boar. The population of wild boar in the deposited area of 1113 km 2 around the Fukushima I nuclear power plant has exploded since the nuclear disaster in 2011 from 3,000 to 13,000. The radioactive pigs destroy the agricultural land in the areas around the disaster site - the damage has already risen to more than 770.
Glass frogs are known for their thin and partly transparent skin, especially on the belly side. The skin would have a camouflage effect by blurring the outline of the animal. The females lay 20 to 30 eggs, which, like the organs, are clearly visible through the skin. The males monitor the eggs and ensure that no parasites are added.
You pick up a nice snail house - and your breathing becomes paralyzed. You step on a snake - and your blood vessels are perforated. You swim against a jellyfish - and your heart stands still. Some animals are not just a bit toxic to humans. We have brought together three of the ugly of their kind.
Man is one of the few mammals who has sex for pleasure. On the other hand, many animals last a lot longer than we do. An average sex party lasts 5.4 minutes with us, research shows. However, animals count in hours or even days. 5. Marshmallows (5-14 hrs) © Australian Museum The male mates are exhausted.