Formation of major biomes such as desert rainforest takes place by

Options

A. rotation of our planet around the sun
B. tilting of our planet to its axis
C. both 1 and 2
D. seasonal periodicity

Answer

To answer the question regarding the formation of major biomes such as deserts and rainforests, we can break it down into several steps:

### Step-by-Step Solution:

1. **Define Biome**:
- A biome is a large regional area characterized by specific climate conditions, vegetation, and fauna. Each biome has unique environmental conditions that support particular types of plants and animals.

2. **Understand Climate Influence**:
- The climate of a biome is primarily influenced by the amount of sunlight it receives. The Earth’s rotation around the Sun and its axial tilt play significant roles in determining the climate of different regions.

3. **Role of Sunlight**:
- The Sun is the main source of energy for the Earth. The distribution of sunlight across the planet affects temperature and precipitation levels, which are critical in defining the characteristics of biomes.

4. **Earth’s Rotation and Axial Tilt**:
- The Earth rotates on its axis and orbits around the Sun. This rotation and the tilt of the Earth’s axis lead to seasonal changes and variations in climate, which in turn influence the types of biomes that can form in different regions.

5. **Formation of Specific Biomes**:
- For instance, deserts form in regions with high temperatures and low precipitation, while rainforests develop in areas with high humidity and abundant rainfall. The specific adaptations of flora and fauna in these biomes are a result of the climatic conditions created by the Earth’s position relative to the Sun.

6. **Conclusion**:
- Therefore, the formation of major biomes such as deserts and rainforests occurs due to the combined effects of the Earth’s rotation around the Sun and its axial tilt, which together influence climatic conditions and seasonal changes.

### Final Answer:
The formation of major biomes such as deserts and rainforests takes place due to the rotation of the Earth around the Sun and the tilting of the Earth on its axis.

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