The reign of Harshavardhana was a period of advancement in religion, literature and art. He was initially a follower of Shaivism but became a follower of Buddhism (Mahayana) under the influence of Hiuen Tsang. He gave patronage to all religions. During his reign, two religious meetings were organized:

1. Kannauj Sabha (Fifth Buddhist Council): It was chaired by Hiuen Tsang. Mahayana was promoted in this.

2. Mahamoksha Parishad: The Prayaga Assembly was an assembly of universal character for offerings of royal charities to all classes of people. It was known as the Maha Moksha Parishad.

The accounts by the foreign travellers that survive are often varied in terms of their subject matter. Some deal with affairs of the court, while others are mainly focused on religious issues, or architectural features and monuments. For example, one of the most important descriptions of the city of Vijayanagara in the fifteenth century comes from Abdur Razzaq Samarqandi, a diplomat who came visiting from Herat.

The Keshopur-Miani Community Reserve is in Punjab. The Reserve is a mosaic of natural marshes, aquaculture ponds and agricultural wetlands maintained by the annual rainfall runoff. This Site is an example of wise use of a community-managed wetland, which provides food for people and supports local biodiversity. Threatened species present include the vulnerable common pochard (Aythya ferina) and the endangered spotted pond turtle (Geoclemyshamiltonii).

The first Estimates Committee in the post-independence era was constituted in 1950 on the recommendation of John Mathai, the then finance minister. Originally, it had 25 members but in 1956 its membership was raised to 30. All the thirty members are from Lok Sabha only. The Rajya Sabha has no representation in this committee.

Blue Box refers to a category of domestic support or subsidies under the WTO’s Agreement on Agriculture. Blue box supports are subsidies that are tied to programmes that limit production. Hence it is an exception to the general rule related to agricultural support. The Blue box subsidies aim to limit production by imposing production quotas or requiring farmers to set aside part of their land. It covers payments directly linked to acreage or animal numbers (reduction).

Wular Lake is one of the largest freshwater lakes in Asia. It is situated in Bandipora district in Jammu and Kashmir, India. The lake basin was formed as a result of tectonic activity and is fed by the Jhelum River. Chilika Lake is a brackish water lagoon, spread over the Puri, Khurda and Ganjam districts of Odisha state on the east coast of India, at the mouth of the Daya River, flowing into the Bay of Bengal. Pulicat Lake at the border of Andhra Pradesh and Tamil Nadu is the second largest brackish water lake in India and home to Pulicat Lake Bird Sanctuary. Pangong Tso is situated at barren land in Ladakh. The lake is one of the largest brackish lakes in Asia.

Tritium is a beta-emitting radioactive isotope of hydrogen. Its nucleus consists of one proton and two neutrons, making it three times as heavy as a hydrogen nucleus (with its one proton) and one-and-a-half times as heavy as deuterium (which contains one proton and only one neutron).

All the above-mentioned agents are used as natural indicators to determine acid and base. The indicators that are obtained from plants are known as natural indicators. Examples – Turmeric, china rosa, red cabbage and grape juice. Some flowers, such as the hydrangeas, can also determine whether a substance is acidic or basic.

Clown fish lives in a symbiotic relationship with marine creature, Sea Anemone. The symbiotic relationship between an anemone (Heteractis magnifica) and a clownfish (Amphiron ocellaris) is a classic example of two organisms benefiting the other; the anemone provides the clownfish with protection and shelter, while the clownfish provides the anemone nutrients in the form of waste while also scaring off potential predator fish.