Hydrogen bonds between the nitrogenous base hold the two strands of DNA together. These hydrogen bonds are base specific i.e. A (adenine) can form hydrogen bonds only with T (thymine) and C (cytosine) can form hydrogen bonds only with G (guanine).

The Srisailam Dam is constructed across the Krishna River on the border of Mahabubnagar District, Telangana and Kurnool district, Andhra Pradesh near Srisailam temple town and is the 2nd largest capacity working hydroelectric station in the country.

Insects are a class of invertebrateswithin the arthropod phylum that have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. They are the most diverse group of animals on the planet, including more than a million described species and representing more than half of all known livingorganisms. 

Examples are water bug, horsefly, hornet etc.

A tornado is a violently rotating column of air that is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud.

a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.

Acidity and alkalinity are expressed on the pH scale, which ranges from 0 (strongly acidic) to 14 (strongly basic, or alkaline). A pH of 7.0, in the middle of this scale, is neutral. Blood is normally slightly basic, alkaline, with a pH range of 7.35 to 7.45.

A factor of overall unemployment that relates to the cyclical trends in growth and production that occur within the business cycle.

The Kalinga Prize for the Popularization of Science is an award given by UNESCO for exceptional skill in presenting scientific ideas to lay people.

Duncan Passage is a strait in the Indian Ocean. It is about 48 km (30 mi) wide; it separates Rutland Island (part of Great Andaman) to the north.

An atom is the basic unit that makes up all matter. There are many different types of atoms, each with its own name, mass and size.