: Confirm the book has A.I. Alekseev , V.V. Nikolina , and S.I. Lipkina on the cover to ensure the answers match.

: The Earth's crust, volcanoes, earthquakes, and landforms. Hydrosphere : Oceans, rivers, lakes, and the water cycle. Atmosphere : Weather, climate, air pressure, and wind.

: Textbooks are updated frequently; make sure the GDZ year matches your book edition.