Page 13 - General and Inorganic Chemistry for Advanced Secondary Schools Students Book Form Five and Six

Biology for Secondary Schools

Forestry
Forestry deals with creating, managing,
and conserving forests. Forests are
sources of fuel (firewood and charcoal),
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building materials, and medicinal
plants. They also serve as water
catchments. Biologists have developed

varieties of trees that grow well in dry
areas. Such trees are used to reclaim dry
Figure 1.4: Jersey cow
land for human settlement. Through

Biological research, varieties of fast-growing trees have been developed. The
fast-growing trees are planted in deforested areas. This is called reforestation.
Reforestation helps to preserve water catchments so as to ensure a continuous

supply of water. Forests also prevent desertification. See Figure 1.5 (a) and (b).

(a) (b)

Figure 1.5: (a) Deforestation due to excessive cutting of trees (b) planted trees

Chapter summary

1. Biology is the study of living things. People who study Biology are
called Biologists.
2. The main branches of Biology include Botany, Zoology, and
Microbiology.

3. The cell is the basic functional unit of life.

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