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Anonymous users2024-02-08Fish: shark, whale, catfish, silver carp, hairtail, mandarin fish, salmon, crucian carp, herring, yellow croaker, eel, pomfret, white fish, whitebait, tuna, tropical fish, sturgeon, blackfish, pufferfish, anchovy.
Amphibians: frogs, turtles, soft-shelled turtles, penguins, seals, walruses, sea lions, hippos.
Reptiles: lizards, chameleons.
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Anonymous users2024-02-07Grass carp. Mudskipper.
Five-step snake. Pearl Bird.
Gorilla.
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Anonymous users2024-02-06There are a lot of these, just look them up.
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Anonymous users2024-02-05That's right, the subject is not a problem, maybe I just want to communicate with you, the subject is right, animals are the friends of human beings, so today we vigorously advocate that man and nature live in harmony. We must not only protect animals, but also make good use of animals, not blindly cut down and destroy the living environment of animals, we must be good partners of animals, protect their living environment, so that they can provide higher value for human beings.
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Anonymous users2024-02-041. Animals are the friends of human beings, and human beings are the companions of animals; (To protect animals is to protect human beings).
2. Animals are the friends of human beings, and human beings are the partners of animals; (Be kind to our animal friends, that is, be kind to ourselves).
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Anonymous users2024-02-031. Flying:
1.Insects: dragonflies, flies, ......
2.Migratory birds: red-crowned cranes, wild geese, ......
2. Reptiles.
Mammals: tigers, lions, ......
3. Aquaponics.
Fish: bighead carp, grass, blue, silver carp, ......
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Anonymous users2024-02-02I guess you're a teacher.
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Anonymous users2024-02-01(1) According to whether there is a spine in the body, animals can be divided into two categories: vertebrates and invertebrates, Siberian tigers, rabbits, pigeons, carp, frogs, whales, turtles have vertebrates in their bodies, shrimp, ladybugs, and mussels belong to invertebrates, carp belong to fish, frogs belong to amphibians, turtles belong to reptiles, domestic pigeons belong to birds, whales belong to mammals, shrimp, seven-star ladybugs belong to arthropods, and mussels belong to mollusks
2) Mice and bats have the characteristics of viviparous mammals and belong to mammals, toads and baby fish belong to amphibians, peacocks belong to birds, snakes belong to reptiles, seahorses, abalones and squid belong to fish, seven-star ladybugs and crabs belong to arthropods, and cuttlefish belong to mollusks
So the answer is: (1).
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Anonymous users2024-01-31(1) Earthworms and locusts do not have vertebral vertebrae in their bodies and are invertebrates; Frogs, fish, pigeons, and giant pandas all have vertebral vertebral spine in their bodies
2) Earthworms live on moist land and use moist body walls to breathe; The body is composed of many body segments, has body cavities, and belongs to annelids
3) The larvae of the frog are tadpoles, which live in the water and breathe with gills, and the adult is a frog, which can live in both water and arid land, and breathe with lungs, and the lungs are underdeveloped, ** assisted respiration Among the amphibians, the Chinese alligator belongs to the second-class protected animals
4) The body of the domestic pigeon is streamlined, which reduces the resistance of the air; The forelimbs become wings, which are the organs of flight; body surface covered with feathers; Some of the bones are thin and some are healed, and most of the long bones are hollow; double breathing; The pectoral muscles are well developed, and the wings are pulled to complete the flight These characteristics are adapted to the life of flying
5) Locusts belong to insects, the exoskeleton on the body surface, which protects the soft internal organs and prevents the evaporation of water in the body The thorax has three pairs of legs and two pairs of wings, which are locomotor organs
6) Evolutionary history of animals: (invertebrates) protozoa Coelenterates Flattened animals Nematoforms Molluscas Annelids Arthropods Arthropods (vertebrates) Fish Amphibians Reptiles Birds and mammals Earthworms belong to annelids, Locusts belong to arthropods, Fish belong to fish, Frogs belong to amphibians, domestic pigeons belong to birds, Pandas belong to mammals Therefore, they are arranged in order from simple to complex are:
So the answer is: (1) 2) moist body wall; Tache; (3) gills; Lungs; **；giant salamander (salamander); (4) the forelimbs become wings; double breathing; (5) exoskeleton; Prevents the evaporation of water from the body; Motion; Wings; Foot; （6）①⑥
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Anonymous users2024-01-30Most mammals are vertebrates, humans, dogs, cats, tigers, leopards, and many more.
Between 380 and 3.6 million years ago.
In 1978, human footprints left in the volcanic tuff were found in the Letolier strata, belonging to two individuals, one large and one small. The footprints have raised arches, rounded heels, and the big toe is juxtaposed with the other four toes in front of the foot, all of which are human characteristics, so some scholars have classified it as a hominus. But no stone tools have been found in the same strata. >>>More
1. People need oxygen in the air to breathe.
2. The air provides atmospheric pressure. >>>More
The differences between human learning and animal learning are: different intermediaries, different purposefulness, and different experiences. >>>More
I've always loved small animals since I was a child, so I've had many small animals at home. I've had puppies, mice and ......Not only do I like my own animals, but I also like the animals of my neighbors, and I often play with them, and sometimes I can't help but touch them with my hands. >>>More
Strip Hua snail. After every rain, we can always find cute snails wriggling under the trees, among the grass or on the concrete floor. >>>More