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TOPIC 8: ANIMALS
In topic 8, we are going to learn about animals. In Mandarin, we pronounce
animals as 动物 (dòngwù). Animals are multicellular organisms that form the biological
kingdom Animalia. They also need to breathe in oxygen, consume organic materials,
move, and reproduce just like humans. Animals have their own interactive way among
themselves and the environments, forming a complex of food webs. It has been
estimated that there are around 7 millions of animals in total in this world, in which 1
million of them are insects. As we all know, there are a lot of animals present in this
world. So, let’s learn the specific and correct term used in animals.
8.1 Classification of animals
Table above is the concept of animal classification sorted out by scientists based
on their characteristics. The system for classification of animals is called taxonomy.
Animals are broken down into two types: vertebrates & invertebrates. Animals with
backbone are vertebrates whereas invertebrates are for the animals without
backbone.
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