1. In Rajasthan, Katha is extracted from the Khair tree.

2. Catechu is obtained by cold crystallization from water extract from the Acacia tree, commonly known as the Khair tree.

Walara agriculture is a type of shifting agriculture, in which land is used for a few years and later abandoned due to lack of fertility and diseases in the soil. This agriculture is done by primitive tribes.

2. Banswara, Udaipur and Dungarpur districts of Rajasthan are inhabited by primitive tribes. Walara agriculture is practiced in these districts.

1. Walara agriculture is a type of shifting agriculture, in which land is used for a few years and later abandoned due to lack of fertility and diseases in the soil. This agriculture is done by primitive tribes.

2. Banswara, Udaipur and Dungarpur districts of Rajasthan are inhabited by primitive tribes. Walara agriculture is practiced in these districts.

Ramgarh Vishdhari Sanctuary has been notified as a tiger reserve. It is the fourth tiger reserve of Rajasthan and 52nd tiger reserve of India. It was notified on May 16, 2022.

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.

1. World Environment Day is celebrated every year on 5 June.

2. Its objective is to make mankind aware of the environment.

3. First held in 1973, it has been a platform to raise awareness on environmental issues such as marine pollution, overpopulation, global warming, sustainable development and wildlife crime. World Environment Day is a global platform for public outreach, with participation from over 143 countries annually.

Tanka is an underground reservoir built to store rain water. The tanka usually has a square or rectangular shape and is constructed from clay or stone. A wall is built around the tanka so that rain water can collect in it.

Khadin-It is a temporary pond made of earth, it is built under some sloping land. There is an earthen wall (Dhora) on both sides and a strong wall made of stone on the third side. When there is excess water, the pond gets filled and the water flows into the next pond. After the water in Khadin dries up, agriculture is done in it.