Biosphere: Plants, Birds, Mushrooms, Humans, Grass, Geosphere: Volcanoes, Landforms, Rocks, Mountains, Hills, Hydrosphere: Snow, Lake, Ocean, Glaciers, Rain, Atmosphere: Carbon Dioxide, Trophosphere, Oxygen, Air , Stratosphere ,

Spheres of the Earth

द्वारा

लीडरबोर्ड

दृश्य शैली

विकल्प

टेम्पलेट स्विच करें

ऑटो-सेव पुनःस्थापित करें: ?