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From Biology 6 to Biology 8, the children understood the ants major knowledge about mechanical biology, see the biodiversity study and evolutionary history of the world. By Biology 9, you will be exploring new areas of biology, the organism is hereditary and the organism, its body and its environment. When exploring these areas, they should always be open to interpretation The key and serious problems are:

- Why do children bear the same characteristics as parents?

- How important is genetics to production and human life?

- What is the relationship between organisms and the environment?

- Why do each need to have a sense of environmental protection?

Through researching the information in the word channel and the inner picture channel textbooks (textbooks), they must try to answer the commands by themselves lesson, that is a good effective way to achieve the goal of the lesson chapters as well as the whole program. Images in textbooks are designed or collected by the authors themselves from many sources at home and abroad. Please apply by the SGK authors express gratitude to the authors of those sources.

Finally, note some of the following when using books: - For lessons that need a dictionary, you should draw the board in a notebook or in Biology exercise 9, not going on into the textbook, - Remember the summary of the main ideas that are framed at the end read and read the section "Do you know" to gain more information.

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