: Provides solutions for the Sonin and Agafonova "Sphere of Life" (Сфера жизни) workbook, including training tasks.
: Offers detailed solutions for the 2019 edition and later, including mobile-friendly navigation. reshebnik po biologii za 8 klass sonin rabochaia tetrad
Blood, immunity, and transport of substances. Vital Systems: Digestion, respiration, and excretion. : Provides solutions for the Sonin and Agafonova
: Features a large database of over 300 verified answers for the Sonin/Agafonova workbook. 🧬 Common 8th Grade Topics Most Sonin workbooks follow this structure: including mobile-friendly navigation. Blood
: Specifically covers the version by Sonin and Sapin , organized by topic (Nervous System, Blood, Digestion, etc.).
Humoral and nervous systems, brain structure. Analyzers: Sight (eyes), hearing, smell, and taste. Support & Movement: The skeletal and muscular systems.