- Social function : factual text used to explain the process involved in the evolution of natural and social
phenomena, or how something works. In the school curriculum, explanation is one of
descriptive text.
- Generic structure : general statement ( to position the reader)
sequenced explanation of why / how something occurs ( usually a series of logical steps
in the process)
B. Example
How Desert Remains Dry
There are three reasons why deserts remain dry. These are high mountain barriers, cold ocean currents, and high pressure systems.
Mountain Barriers
When warm air passes over the ocean it picks up moisture in the form of form of water vapor. As this moist air travels over the land, it rises to pass over mountain ranges. When it begins to rise, the air cools and this causes the water vapor to condense into droplest which fall as rain. When the air reaches the other side of mountain barrier, it has lost all its moisture and so the other side of mountain remains dry
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