... to enhance their competency in scientific writing is recommended. KEYWORDS: English second language, mother tongue, writing strategies, BICS, CALP, academic performance, scientific writing, ... Distribution frequency of lexical density in writing activities not 86 Figure 4.3 Distribution frequency of coherence in writing activities 89 Figure 4.4 Distribution frequency of semantic ... discontinuity in writing activities 93 Figure 4.5 Distribution frequency of semantic simplification in writing activities 96 Figure 4.6 Distribution frequency of risk avoidance in writing...