A spit is a type beach erosion called Longshore drift, a bar is formed by deposition of material by streams or currents
Siberia is a vast region, mostly in the territory of Russia, and it is divided into three large regions.
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Western Siberian Plain/Lowland
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Located between the Ural Mountains and the Yenisei River. Occupies the western part of Siberia, and it is mostly composed of lowlands covered with dense forest, the taiga. The northern part is dominated by the tundra.
<em>Central Siberian Plateau
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Located between the Yenisei River and the Lena River. Occupies the central part of Siberia, and it is mostly dominated by a plateau which gains in height on the southern part and is lowering on the northern part. The lower parts are covered with the taiga, while the higher are barren. The northern part is dominated by the tundra.
<em>East Siberian Highlands
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Located between the Lena River and the Pacific Ocean. Occupies the eastern part of Siberia, and the dominated land forms are the mountains, mostly the Kolyma Mountains. Depending on the elevation, the lower parts are covered with the taiga, while the higher are barren. The northern part is dominated by the tundra.
The difference between a dry climate and a tropical climate is that the dry climate as you know is dry and the tropical climate is moist and wet, the compare is tropical wet climates receive much more rain than tropical dry climates do. However, the term “tropical wet and dry climate” actually refers to a single type of climate. Tropical dry climates occur in deserts, while tropical wet climates usually occur along the rainforest belt.
You are screwed. Good luck!