Botany, the study of plants, occupies a peculiar position in the history of human knowledge. We don’t know what our Stone Age ancestors knew about plants, but from what we can observe of reindustrialize societies that still exist, a detailed learning of plants and their properties must be extremely ancient. This is logical. Plants are the basis of the food pyramid for all living things, even for other plants. ______ Tribes living today in the jungle of the Amazon recognize hundreds of plants and know many properties of each. To them botany has no name and is probably not even recognized as a special branch of" knowledge" at all.
A. Yet few people will fail to recognize a rose, an apple, or an orchid.
B. From then on, humans would increasingly take their living from a few plants.
C. They have always been enormously important to the welfare of people, not only for food, but also for clothing, weapons, tools, dyes, medicines, shelter, and many other purposes.
D. Unfortunately, the more industrialized we become the farther away we move from direct contact with plants, and the less distinct our knowledge of botany grows.
E. The accumulated knowledge of tens of thousands of years of experience would begin to fade away.
F. It is logical that a detailed learning of plants and their properties must be extremely ancient.