Which biome is speciallised by thick covering of snow year to year?

Options

A. Tropical rain forest
B. Tundra biome
C. Taiga biome
D. Grassland

Answer

**Step-by-Step Solution:**

1. **Understanding Biomes**: Begin by defining what a biome is. A biome is a large ecological area on the Earth's surface, with flora and fauna (plants and animals) adapting to their environment.

2. **Identifying the Biomes**: The question asks about a biome characterized by a thick covering of snow year after year. The options provided include tropical rainforest, grassland, tundra, and taiga.

3. **Analyzing Tropical Rainforest**: Tropical rainforests are known for their high temperatures and high rainfall. They do not have snow, so this biome can be eliminated.

4. **Analyzing Grasslands**: Grasslands experience high temperatures but have lower rainfall compared to tropical rainforests. They also do not have a thick covering of snow, so this biome can be eliminated as well.

5. **Analyzing Tundra Biome**: The tundra biome is characterized by extremely low temperatures and very little precipitation, which occurs mainly in the form of snow. This biome is known for having snow cover that persists year after year.

6. **Analyzing Taiga Biome**: The taiga biome, also known as boreal forest, consists of coniferous forests and experiences snowfall. However, it does not have the same level of persistent snow cover as the tundra.

7. **Conclusion**: Based on the analysis, the biome that is specialized by a thick covering of snow year after year is the **tundra biome**.

**Final Answer**: The tundra biome.

---