India on standard meridian

Location and Geological Divisions of India

Location and Geological Divisions of India The mainland of India extends from Jammu and Kashmir in the North to Kanyakumari in the South, Arunachal Pradesh in the East to Gujarat in the West. Its territorial stretch extends 12 nautical miles i.e. 12.9 km toward the sea from the coast. Location Read more…

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Landforms and their evolution

Landforms and their evolution Landforms are the natural process of the earth’s surface that includes mountains, hills, plateaus, and plains. Landforms consist of their own physical shape, size, materials. These are the results of certain geomorphic processes and agents. Landforms may change their shape, size, and nature after their formation Read more…

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Pigeon: Columba livia

Pigeon (Columba livia) – General Characters

Pigeon (Columba livia) – General Characters The systematic position of Columba livia (Pigeon) Kingdom – Animalia Phylum – Chordata Subphylum – Vertebrata Superclass – Tetrapoda Class- Aves Subclass- Neornithes Superorder – Neognathae Order- Columbiform Family – Columbidae Species – Columba livia The common name of Columba livia is a pigeon. Read more…

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Axolotl larva - Neoteny in Amphibia

Neoteny in Amphibians

Neoteny in Amphibians In some amphibians, the larva becomes sexually mature without metamorphoses or delay metamorphoses. In some amphibians, the character of neoteny is shown as the failure or delay of the larva to metamorphose while becoming sexually mature. Neoteny emphasizes the retention of embryonic or larval features in the Read more…

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