People are mammals, too!Mammal are vertebrates, so they have backbones. They are the only kindof animal with fur or hair, except for some insects. Most mammals have fourlegs and a tail. Some mammals have two arms and two legs. Marine mammals(海洋哺乳动物) that live in water, like ...
Like all vertebrates, mammals have muscular hearts that contract repeatedly to pump blood, which in turn, delivers oxygen and nutrients throughout the body while removing waste products such as carbon dioxide. However, only mammals and birds possess four-chambered hearts, which are more efficient th...
acountinginsects countinginsects[translate] adamage taken(Arena-only) 损伤被采取的(竞技场只)[translate] aSanple Sanple[translate] a'Terms and Conditions ‘期限和条件[translate] aAll mammals are vertebrates. 所有哺乳动物是脊椎动物。[translate]...
Mammals arevertebrates, which means that they have backbones. Go on – feel your own backbone; it’s the bumpy bit that runs up the center of your back! All mammals have backbones, from the tiniest shrew to the largest elephant. Mammals are warm-blooded A mammal’s body is able to ra...
Mammalian skin is made up of three layers; epidermis, dermis, and hypodermis, however, this characteristic is found in all vertebrates. Mammals are the only animals with hair Most mammals are endothermic; they produce their own body heat. ...
Mammals are considered to be the dominant and probably the most diversified class of living vertebrates.选择语言:从 到 翻译结果1翻译结果2 翻译结果3翻译结果4翻译结果5 翻译结果1复制译文编辑译文朗读译文返回顶部 哺乳动物被认为是主要的,并可能是最多元化的生活类脊椎动物。 翻译结果2复制译文编辑译文朗读...
Invertebrates are a group of animals thathave no backbone, unlike animals such as reptiles, amphibians, fish, birds and mammals who all have a backbone. Is a mammal an invertebrate? The animal kingdom can be split into two main groups: vertebrates andinvertebrates. Vertebrates such as mammals,...
Allmammalsare vertebrates in the class Mammalia, the name of which means an animal that suckles its young. It refers to female mammals, which have mammary glands for bearing milk. All mammals also have three middle ear bones, a neocortex region in the brain, and either hair or fur. These...
All mammals are vertebrates, meaning they have backbones. But mammals are distinguished from other vertebrates by a number of shared features. That includes warm blood, body hair or fur, the ability to breathe using lungs, and nourishing their young with milk. But despite these similarities, ...
Many mammals have been proved by lots of observations to increase their body size in the process of evolution This is a very interesting biological phenomenon, and on which theoretical explanations have been suggested by paleontologists. Some of the explanations are based on the famous Bergman s la...