初三生物复习基础练习(Basic exercises for basic biology review).doc
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初三生物复习基础练习(Basic exercises for basic biology review)
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Basic exercise of biology review basic exercise 1. Cell is biology 3. Biosphere includes and basic unit. ,, and. Bacteria and true
The bacteria are distributed in various circles, and human activities can reach the various circles of the biosphere, and the human foothold is the lithosphere. 4. The biosphere provides basic conditions for the survival of living things: gas and water, and certain living space. Sunshine, empty
Life depends on the environment. Environmental factors that affect biological life can be divided into two categories: (light, temperature, water, air, etc.) and
Competition, partnership, etc. Can determine which factors affect biology. The environment of the various factors of organism is to work together at the same time, rather than a single, solitary site work, namely biological survival and reproduction, by a combination of various factors, but the role of the various kinds of factors are not of equal importance, which can find the main factors. 6. Explore the general process of activity: draw, draw conclusions, express and communicate. 7. In the study of the effects of a condition on the subject of study, all other conditions were identical except for this condition, which was called only one. Its the experiment. Control the variables of the experiment, make assumptions, and implement the plan
8. The experimental group of the control experiment was the group receiving the experimental variables; For example, object groups that do not accept the experimental variables. Every living creature has its way of life. The adaptability of biology is. That meet the needs of
and
10. Within a certain area,
with
The unity that is formed is called the ecosystem.
Like a river, pay attention to the whole under
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