Abstract
The aim of the research is to analyze biology books for middle school in the light of biological security. From (3) main areas (health security, environmental security and food security) from which (50) sub-paragraphs emerged, then the researcher analyzed the biology books for the preparatory stage scheduled for the academic year (2020-2021) in the light of this criterion, as the number of analyzed pages reached (657) page. The registration and repetition units were adopted as a census unit, and the Holste equation was used to calculate the stability coefficient of the analysis in agreement with external analysts and with the researcher himself over time. Keywords : Biosecurity , biology books for middle school.
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