Find the types and characteristics of animals in various environments

Mammals, reptiles, amphibians, birds, fish, insects,

Chapter 22 of the Beijing Normal University Edition of Biology Chapter 22 The Main Taxa of Animals (Invertebrates) Teaching Micro Lesson.

The habitat environment of animals is roughly divided into three categories: water, land and air According to the habitat environment of animals, animals are divided into aquatic animals, terrestrial animals and animals flying in the air Animals living in different environments have different movement modes and show adaptation to their living environment, such as: fish live in water, and the mode of movement is swimming; Birds live in the air and their mode of movement is flying; Horses live on land and walk and run in locomotion mode

So the answer is: in the water; Land

Vertebrate. Vertebrates include: fish, reptiles, birds, amphibians, mammals and other five major nets.

Invertebrate.

Invertebrates include: protozoa, molluscs, worms, insects, crustaceans and other phyla. So invertebrates make up more than 90 percent of all animals in the world.

1. The exoskeleton of insects: prevent the evaporation of water in the body;

2. Reptile scales or scaly keratin**: reduce the evaporation of water;

3. Fin of aquatic animals: paddling, controlling balance;

4. Feathers of birds: keep warm from the cold;

5. Wings of birds: flight;

6. Bear's fat: keep out the cold and provide energy during hibernation;

7. Primate tail: maintain balance;

8. Animal claws: easy to crawl, catch prey, etc.

The neck of a giraffe, the hump of a camel, etc.

Earthworms, which live in moist soil sacs rich in humus, wriggle their bodies through the combination of muscles and bristles, feeding on the dead leaves, rotten roots and other organic matter of plants. Body segmentation allows the earthworm's body movement to be flexible. It has no lungs or trachea, and breathing is done by a mucus wall that keeps it moist at all times.

The body wall of the earthworm is densely packed with capillaries, and the oxygen in the air first dissolves in the mucus on the body surface, then seeps into the body wall, and then enters the capillaries of the body wall. Carbon dioxide in the body is also excreted from the body surface through the capillaries in the body wall. Animals need a suitable temperature to live, and earthworms cannot maintain a constant body temperature, so they can only live in the deep layers of the soil sac where the temperature does not change much.

Wild animals refer to wild animal species that live in a natural state and are in danger of extinction due to the species' own reasons, drastic changes in the environment or the impact of human activities, and are not artificially bred mammals.

Birds, reptiles.

Amphibians, fish, molluscs and other animals. The world's wild animals are divided into four types: endangered wild animals, beneficial wild animals (referring to those wild animals that are beneficial to agriculture, forestry, animal husbandry, health and health care, such as carnivorous birds, etc.), economic wild animals and harmful wild animals.

Wildlife features.

Wild animals, as the name suggests, are animals that grow and breed in the wild, and in general, have the following characteristics:

Survival in the wild is independent, i.e. it does not depend on external factors (such as human power) to survive, in addition to being population and exclusive.

Cats, like to eat meat, good at nocturnal activities, canine teeth are very large, claws are also very sharp, good at catching small animals, foraging in the wild cats can also catch frogs, but also often eat cooked food. Loved the cleanliness and hygiene. The sense of hearing is also very smart, and in daily life, he relies on his sense of hearing to pay attention to the movement of the surroundings and find out where the rats are moving.

When the cat catches the mouse, it is attentive and ready to fight. The kittens in the family also maintain the nocturnal habit of feral cats to a certain extent.

Bats emit ultrasound waves from their throats and then respond to the ultrasound waves to identify their direction. There are some species of the face that have evolved special structures that increase sonar reception, such as nasal lobes, multiple folds on the face, and complex large ears. He likes to eat fruits, fish, pollen, and even blood, etc., and needs to hibernate and like to live in caves.

The hamster has a body length of 5 28 cm and weighs 30 1000 g. The body is short and stubby. The tail is short, generally no more than half of the length of the body, and some varieties are no more than half the length of the hind legs, or even barely visible.

The main food is plant seeds, likes nuts, young stems or leaves of plants, and occasionally small insects. Most do not hibernate and live by storing food in the winter. A small number of varieties go into a less active quasi-hibernation state in cold weather.

Cute and lively, men and women alike.

Koala koala is also known as koala, koala, koala, koala, scientific name phascolarctos cinereus English: koala ** is an ancient Aboriginal word that means "no drink."".Because koalas get 90% of their water from the eucalyptus leaves they feed, and they only drink when they are sick and in drought Living in Australia, it is a rare and precious arboreal animal in Australia, belonging to the marsupial koala family of mammals.

It is found in the eucalyptus woods of southeastern Australia. Although koalas are called koalas, don't be misled by the name, koalas do not belong to the bear class, in the simplest way, bears hibernate, but koalas do not hibernate. This speaks volumes about how koalas are not bears.

The definition of the same species is that free mating under natural conditions produces fertile offspring. A koala and a bear, if they can mate, also do not produce fertile offspring. Therefore, koalas and either bear do not belong to the same species.

Introducing you to a small animal--- cat.

Feline mammaliana, carnivores, felines. English name cat; grimalkin；moggy；puss；pussy；pussycat。The cat's body is divided into five parts: head, neck, torso, limbs, and tail, and the whole body is fur.

Cats have fatty pads on the soles of their toes, so they walk silently. When catching mice, it does not startle mice, and has sharp claws on the toes. The claws are able to be retracted and extended.

Cats retract their claws when resting and walking, and extend them when catching mice, so as not to make a noise when walking, preventing the claws from being blunted. Cats have four fingers on their forelimbs and five fingers on their hind limbs. A cat's teeth are divided into incisors, canines, and molars.

The canine teeth are particularly developed, sharp as a cone, suitable for biting and killing the caught rodents, and the chewing surface of the molars has sharp protrusions, which are suitable for chewing meat; The incisors are underdeveloped. Cats are agile and good at jumping. He likes to eat rats and fish.

As the natural enemy of rodents, cats can effectively reduce the damage of rodents to crops such as green seedlings, and the glyph of cats can be seen as a spot in ancient Chinese agricultural life.

The hamster is a cute little animal, fluffy and soft. There are two small black eyes on a fat face, which is really cute. He likes to eat plants, young stems and nuts.

The expression on your face when you are happy.

One of the most common ways for dogs to wag their tails and jump high is the most common way to express this. Sometimes dogs do"Laughs", manifested as a pile of wrinkles on the nose, the upper lip is pulled apart, the teeth are exposed, the eyes are slightly closed, the gaze is gentle, the ears are stretched back, the mouth is gently opened, the nose is humming, the body is softly twisted, the coat of the whole body is smooth and not erected, the tail is gently swinging, and it is close to people.

Expressions of anger when angry.

The dog's facial expression when angry is almost the same"Laughs"The nose is raised, the upper lip is pulled apart, and the teeth are exposed, except that the eyes are wide open, the gaze is sharp, and the ears are stretched back obliquely. Generally, the mouth is not open, making a whirring and threatening sound, stomping all four feet vigorously, the body is stiff, the coat is erect, the tail is steeply or straight, and a certain distance from people is kept. If you have your forelimbs down and your body sits back, it is a sign that you are about to attack.

Hehehe, I can't say what to do with this.

I'm introducing a little rabbit that has just been born.

The ears are not standing, they are deflated, because the feathers he has just given birth have not yet grown, because he has just been born very soft, so everyone has to cover it to a place where there is no sun, because if she is too hot, it will not work, the second point is that you can't get a little rabbit, you can't laugh, Mother Rabbit, if Mother Rabbit sees him, she thinks that if you want to take the little rabbit away, you will eat the little rabbit, because he thinks it is the safest place in his belly, do you understand?