Animals live animals of various shapes and sizes all over the world. Some of them walk or crawl on the ground, some fly in the air or swim in the water.
Horses, canaries, clams, goldfish, butterflies, and worms are all animals, as well as oysters, beetles, elephants, lobsters, sponges, seals, and life. Many animals are very small and are seen only by a microscope, and the largest animal is a blue sperm whale with a length of more than a row of five elephants.
No one knows exactly how many species of animals exist in the world.
Scientists have so far been able to classify more than a million species of animals, but every year it discovers a few hundred new species.
In 1969, the American scientist Robert Hueiker classified the living into five kingdoms (major groups): the Kingdom of The First Sona (Monera), the Kingdom of the Proteas, the Kingdom of Fungi, the Kingdom of Plants, and the Animal Kingdom.
The diversity of animal life is limitless, with animals ranging from complex animals such as great apes such as gibbons to fine-sized parasites such as broad worms. Some animals, such as the polar hook, migrate over large distances every year. Others, such as a plant-like sea fan, spend most of their lives on the ocean floor.
It is very easy to distinguish animals from other organisms.
For example, most animals are characterized by movement from place to place, but most plants and fungi are installed in places where they grow by roots or by root-like structures. Animals feed with plants or other animals, while the majority of plants make their food from air and water using sunlight. However, certain species of animals, such as sponges, spend all their life after the larval phase, fixed on rocks in the bottoms of the sea, while the carnivorous plants grow in poor soils, but eat insects to make up for the low food they receive from the soil.
The huge blue sperm whale is much larger than the elephant, the largest wild animal, or the longest giraffe of all.
Most animals are made up of different types of cells, but hyperactivity (protease) and nuclei oles (monara) is made up of one type of cell.
A hummingbird can fly vertically like a helicopter. It can flutter in front of the flower to accommodate nectar. Hummingbird is only 5 cm long and is the smallest bird ever.
Scientists have classified more than a million species of animals.
They identified about 1 million insects on their own and there were also 21,700 species of fish, 8,600 birds, 6,000 reptile species, 3,200 species of amphibians, and 4,000 mammal species.
Each species is different from the other species; each species has its way of life that adapts to where it lives and the food it eats. However, many animals are similar in some things. Some are raised as rotten animals in homes, others are produced for meat, and some are wild. Some animals live on land and some are in the water. Animals can be classified in many other ways based on similarities, such as the number of legs each. Classifying animals by similarity is one of the good ways used to divide the animal kingdom into large groups. But the scientific study of animals requires greater attention, with zoologists classifying animals into aggregates based on their physical characteristics.
Animals have been classified as pets and savages as they deal with humans. A dog that does not bite or escape if someone tries to court a pet, as well as a horse that does not kick, a cat that does not scratch, and a bird that sits on a human finger. Wild animals are afraid to approach humans. The vast majority of animals are savage and can be used for them, but they are often brutal again. A few wild animals have been domesticated in large numbers. The majority of these animals are well-known domestic pampered animals and farm animals.إقرأ أيضا:Tiger is all about him
Wild and aquatic animals
The majority of animals are divided into two large groups depending on the environment in which they live. Some are wild and some live on land, others are watery and live in water. Wild animals include several species of animals such as great apes, butterflies, butts, elephants, horses, pigeons, and spiders. Aquatic animals also include different creatures such as clamshell, fish, lobster, sponges, and whales. Some animals such as yasib, frogs, horseshoe crabs (king crabs), salamanders, wild turtles, and reaisare spend part of their life on land and part in the water.
Many animals may be classified by their legs, and each leg may have two legs, four, six, eight, ten, or hundred legs. Bats and birds make up the majority of male animals, while four-legged animals include very familiar animals such as cats, cows, dogs, frogs, lions, and striped tigers. All insect species have six legs and spiders have eight legs, while the number of legs in animals with 100 men is 340. Many animals such as fish and worms have no legs at all.
Hot-blooded animals and cold-blooded animals
The temperature of some animals’ bodies remains constant at all times. These animals are called warm-blooded animals where their body temperature remains constant on hot days and cold days. The body temperature of some other animal changes from time to time. These animal are called cold-blooded animal, with high body temperature in hot weather and low in cold weather, and the temperature of their bodies rarely differs from the temperature of the medium. Birds and mammals (or wild animals or animal raising their young in maternal milk) represent warm-blooded animals, while the rest of the other animals in the animal kingdom are almost cold-blooded. Cold-blooded animals include animal that have no blood at all, such as jellyfish and sponges.
Scientific Classification of Animals
Zoologists classify animals according to their physical characteristics. This coordinated organization in the Animal Kingdom highlights the many links between different animal groups.
Zoologists divide animal that share one or more of their physical traits into major groups, each called a division. Zoologists also divide the animal of each division according to certain differences among themselves into groups called cults. Communities are divided into ranks and rank into factions, factions into races, and races into species. Zoologists use this arrangement to classify each animal species. At the end of this article, animal classification tablesare showing the basic totals of animals.
The importance of animals
Each animal species is an important part of the unique natural order. Animals help build a life as food for humans and plants. At the same time, they also destroy life, because they hunt and kill other animals and feed on plants. As a result, it maintains the numerical balance of plants and animals. This balance is important, often called the network of life.
Humans may not be able to live without the help of animals. The role of animals in natural balance is the most important service they perform to humanity. Moreover, animals supply humans with many different foods and other useful products. Without animals, humans will have no food such as meat, dairy, eggs, and honey, or use products such as wool, fur, and silk.
For thousands of years, humans have brought about changes in the animal world, using species of animal to produce various food and clothing, and have killed or displaced animal that were attacking them or hindering their reclamation. Today, humans are trying to protect species of animal that they had put at risk of extinction.
Most plants, like humans, depend on animal for their basic needs. Without animals, many plants do not breed (producing new generations of the same kind). For example, many flower plants rely on bees and other insects to carry pollen from one plant to another.
Some oak trees also grow from oak nuts buried by squirrels as food supplies and forget the sites where they were buried. Several oak trees also grow from oak nuts, which the elk have folded with their legs and buried deep in the soil. Birds fly from place to place, and plant seeds are often hanging on their legs. Some seeds also have barbed shelling of animal fur, carrying them long distances where they grow away from the parent plant.
Animal eat or destroy plants, but both depend on each other in their diet, where most animals’ waste is fertilizer for plants. After the death and degradation of animal and plants, they return to the soil the substances that help to grow and live.
Some animal change the nature of their environments by depositing solids in those environments, as corals do, for example, by creating limestone rocks in their environments of lime that absorb them from seawater to form their limestone structures.
Humans began to know animal when they were hunting for their food and when they were hunting for their food. The first step taken by the first man towards civilization was to take dogs as hunting companions. The dog is probably the first pet that man has used and used to hunt other animal for his food. Then man learned to breed the animal he was hunting for his food. About 12,000 years ago, cows were recused in the area that now belongs to the southern parts of the Central Asian republics independent of the former Soviet Union. In the Far East, Tibetans have been enslaved by the yak(Tibetan bull). The Lapibes, a traveling people living in northern Europe, had herds of reindeer. In South America, Native Americans have taken in herds of alpacas and llamas.
The goat and lamb first used their meat and then learned to use their fur, skins, and wool to make clothes and houses. horse was first used to his flesh, and then the humans learned to ride the pet horse and used it to drag loads and weights. pig was used about 8,000 years ago in the Neolithic period, and in southern Arabia and Babylon, Iraq, camels were used for riding and carrying weights. donkey was carrying weights in North Africa about 5,000 years ago. The ancient Egyptians used the cat to protect their stores of rats and rats.
pigeon was the first to be eaten by birds, as it was raised by the inhabitants of the Mediterranean basin about 5,000 years ago for its flesh. Domesticated chickens were first raised in south-east Asian regions from wild jungle chickens. Ducks and geese have been intruding since the dawn of history. The Native Americans raised turkeys in what is now Mexico long before Christopher Columbus sailed to America.
Even insects have been exploited by humans for their interests. For hundreds of years, bees have been producing honey for humans, helping to pollinate fruit trees in many places. For thousands of years, Chinese ancients began breeding silkworms and producing natural silk from their cocoons.
Dogs, guinea pigs, mice, and other rodents have been used to increase human information about many diseases. Doctors test new drugs in animals first before they are used in humans, and humans supply many important drugs such as insulin and serums used to fight diseases.
Humans wiped out most of the animal they were hunting. Most wild animal attack humans only when they are unable to escape them or to defend their young. But few animal, such as lions and striped tigers, still hunt humans, but they do so only if they are hit by hunters or become old, so they can’t catch their usual birds from other animal. In the case of the United States, the United States has been able to make a state of distaste for the future of the world. But crocodiles and sharks eat any meat you find when they’re hungry. Poisonous snakes cause human death in many parts of the world. The most dangerous human enemies of animal are parasites from some insects, worms, and other small animal. The parasite lives on the surface or inside the bodies of other animal or plants and feeds them. Parasites include blood-sucking insects such as mosquitoes and tsetse flies, which transmit deadly diseases. The united states of Africa have been the most active in the region, and the international community has been able to provide as much as it can to the international community. Fleas and lice transmit plague and typhus fever.
Microparasites that enter human bodies cause many diseases. There are more than 100 types of pathogenic worms living within human bodies, such as schistosomiasis, hepatic worms, encholastomaworms, flat tapeworms, and capillary worms. The bodies of these worms are mainly made up of limited layers of cells. The cell is the unit of living matter.
Animals affected by humans
The impact of humans on the animal kingdom in many ways. Some species of animal have disappeared because humans have killed large numbers of them, others are disappearing, humans have robbed them of their living spaces, while biologists have elected breeds of animal that did not exist before through hybridization. Prehistoric humans hunted animals of that time, such as mammoths and cave bears, to the point where they were extinct, and then humans killed the cheaper, brutal bull that was found so much in Europe. They also almost overestimated the North American bison, a rough-edited animal commonly called buffalo, and now lives on private farms and national reserves.
Many animal have been reduced because humans have used their former living spaces to build cities and farms. These animals include antelopes, elephants, rhinoceros, and zebras. Through selective hybridization, selected traits of pet breeds were elected. For example, the meat of some chicken strains is a better taste than it used to be. Some chicken breeds are producing more eggs, and goat and rabbit breeds produce better furs used in the garment industry. Certain breeds of animal have also been elected for certain purposes and tasks, such as the german-legged ago breed, which specializes in fighting badger animal living in narrow barns (tunnels) that dig them on farmland, and the breed of sheepdogs with high efficiency in guarding and grazing sheep herds. There are dairy breeds of cows and other high-yielding meat breeds. There are also different breeds of horses that are used for various purposes such as breeds used for transport, other works, and racehorse breeds.
Human protection of animals
It is a human duty to preserve the species of animal that currently exist in the world for the benefit of future generations of human beings. Certain species of animal are threatened with extinction because of overfishing, and some of them are now not adequately placed to live and reproduce. Many nations have therefore allocated special wildlife reserves and enacted laws to prevent hunting within those reserves and to prevent overfishing in special places outside those reserves.
The protection and development of wildlife play an important role in maintaining normal balance. In North America, for example, coyotes cannot attack the herds of human sheep when they find enough of their natural birds of mice and American rabbits. Let’s say that humans have killed American rabbits to feed the mink they raise on farms to produce fine fur. In this case, the coyotes remain hungry even after eating all the rats that are prepared for them, so they are forced to attack the herds of human sheep out of hunger.
Animal are found in all places, in all kinds of climates on Earth, and at all levels of ocean depths. Many types of animals live in the same place, usually, the same animals that have lived in that place for many years, and so the bodies of animal and their ways of living are perfectly compatible with the conditions of places and their quality. So these animal move easily through these places, as you find their food easily in them and breed frequently in thoseplaces. The medium in which the animal lives is called the animal environment, while the aggregation of animals comes according to their environment.