1. Palk Strait is a strait between the Indian state of Tamil Nadu and the Mannar district of the Northern Province of Sri Lanka.

2. This strait connects the Bay of Bengal to the Palk Bay in the north-east and then to the Gulf of Mannar in the south-west.

3. The strait that separates India and Sri Lanka is the Palak Strait.

Soil erosion is a serious environmental problem. Steps should be taken to curb this problem. Following are some ways to prevent soil erosion:

1. Plant trees on barren lands to prevent soil erosion.

2. Add mulch and rocks to trap plants and grass beneath to prevent soil erosion.

3. Mulch matting can be used to reduce erosion on slopes.

4. Place a series of fiber logs to prevent any water or soil from flowing away.

5. A wall at the base of a slope can help prevent soil erosion.

6. Every house should have proper drainage system so that water can flow into proper water collection systems.

7. Afforestation is the planting of trees on a large scale to check soil erosion. 

1. International Tiger Day is celebrated every year on 29 July.

2. This day is also called Global Tiger Day.

3. This day is celebrated every year to raise awareness about tiger conservation.