Table of Contents ASTRONOMY Solar system Galaxy Astronomical observation Space exploration GEOGRAPHY Configuration of the continents Cartography GEOLOGY Structure of the Earth Rocks and minerals Geological phenomena Earth's features METEOROLOGY Atmosphere Climate Weather phenomena Meteorological forecast ENVIRONMENT Biosphere Hydrologic cycle Greenhouse effect Pollution Selective sorting of waste VEGETABLE KINGDOM Simple vegetables Flowering plants Tree ANIMAL KINGDOM Simple organisms and echinoderms Mollusks Crustaceans Arachnids Insects Cartilaginous fishes Bony fishes Amphibians Reptiles Birds Mammals HUMAN BEING Human body Skeleton Teeth Muscles Anatomy Sense organs FOOD Vegetables Legumes Fruits Miscellaneous foods CLOTHING AND PERSONAL OBJECTS Clothing Personal articles HOUSE Exterior of a house Elements of a house Main rooms House furniture Kitchen Bathroom Lighting and heating Household equipment and appliances Do-it-yourself Gardening SCIENCE Laboratory equipment Measuring devices Geometry ENERGY Solar energy Hydroelectricity Nuclear energy Wind energy Fossil energy TRANSPORTATION AND HEAVY MACHINERY Road transport Rail transport Maritime transport Air transport Heavy machinery ARTS Fine arts Crafts ARCHITECTURE Houses Architectural works MUSIC Musical notation Musical instruments Symphony orchestra COMMUNICATIONS Photography Radio Television Sound reproducing system Portable sound systems Communication by telephone Personal computer Internet SOCIETY Downtown Terminal and stations Commercial services Safety Health Education Entertainment SPORTS Gymnastics Swimming Nautical sports Equestrian sports Precision and accuracy sports Winter sports Ball sports Racket sports Combat sports Motor sports Sports on wheels Cycling LEISURE ACTIVITIES AND GAMES Camping Games SYMBOLS Road signs Common symbols Safety symbols INDEX English Spanish.