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Mentougou UPSC NOTE



  • Mentougou District is a district in western Beijing. 

  • It is a treasure trove of natural resources, including coal, limestone, and granite.

  • Mentougou also supplies Beijing with agricultural produce such as roses, wild jujubes, mushrooms, and Beijing white pears.

  • Mining is one of the key industrial activities.

Saguaro cacti

Saguaro cacti

  • The saguaro is a tree-like cactus species in the monotypic genus Carnegiea that can grow to be over 12 meters (40 feet) tall. 

  • It is native to the Sonoran Desert in Arizona, the Mexican state of Sonora, and the Whipple Mountains and Imperial County areas of California. 

  • The saguaro blossom is the state wildflower of Arizona. 

  • Its scientific name is given in honor of Andrew Carnegie. 

  • In 1994, Saguaro National Park, near Tucson, Arizona, was designated to help protect this species and its habitat.

  • A house sparrow nesting on a saguaro cactus.

  • Saguaros have a relatively long lifespan, often exceeding 150 years. 

  • They may grow their first side arm around 75–100 years of age, but some never grow any arms. 

  • Arms are developed to increase the plant's reproductive capacity, as more apices lead to more flowers and fruit.

  • A saguaro can absorb and store considerable amounts of rainwater, visibly expanding in the process, while slowly using the stored water as needed. 

  • This characteristic enables the saguaro to survive during periods of drought. 

  • It is a keystone species, and provides food and habitat to a large number of species.

  • Saguaros have been a source of food and shelter for humans for thousands of years. 

  • Their sweet red fleshed fruits are turned into syrup by native peoples, such as the Tohono Oʼodham and Pima. 



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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Mentougou UPSC NOTE
Mentougou UPSC NOTE
Learnerz IAS | Concept oriented UPSC Classes in Malayalam
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