'subsections' is a correct and usable word in written English.
You can use it to refer to smaller parts of a larger whole, for example, "This document contains three subsections, each addressing a different area of the topic."
Unlike most climate-change models, which calculate how the Earth should absorb and radiate heat in response to a list of greenhouse-gas concentrations, this one has many subsections that represent how the carbon cycle (photosynthesis and its consequences) works, and how it influences the climate.
This section is structured into six subsections.
The following subsections outline five prominent models.
The last objections, those discussed in subsections 4.5 4.6 challenge the ability of causal theories to provide even sufficiency conditions for mental content.
Both subsections relate to the issue of power.
In the next two subsections we will consider more interesting cases, when there is non-zero uncertainty about the premises, and ask how it carries over to the conclusion.
In the following three subsections, other ways of resisting the argument will be discussed.
Those wanting a shorter introduction should read section 1 (skipping subsection 1.1), section 2 (subsections 2.1, 2.2, 2.3), and subsection 3.1.
We will not attempt to survey IE/text mining applications comprehensively, but the next two subsections, on summarization and sentiment analysis, are subareas of particular interest here because of their emphasis on the semantic content of texts.
We shall consider these objections in the corresponding subsections below.
The reader looking for a quick overview should read the following sections and subsections: 1, 2, 3.1, 3.2, 4, and 6.
