marking pheromone

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King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Small, white rat (genus Rattus) on a glass table. (rodent, laboratory, experiment)

Cruel and Unusual Punishments: 15 Types of Torture

Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society

12 Novels Considered the “Greatest Book Ever Written”

July, 2006, Launch of Space Shuttle Discovery STS-121. See attached for full caption information.

Will Light-Speed Space Travel Ever Be Possible?

Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)

7 of the World’s Deadliest Shipwrecks

Marriage. A couple getting married during a church wedding ceremony. (religion, ceremony, bride, groom)

The Seven Sacraments of the Roman Catholic church

Battle of the Alamo from "Texas: An Epitome of Texas History from the Filibustering and Revolutionary Eras to the Independence of the Republic, 1897. Texas Revolution, Texas revolt, Texas independence, Texas history.

6 Wars of Independence

marking pheromone

biochemistry

Learn about this topic in these articles:

chemoreception

In chemoreception: Pheromones
Marking pheromones require characteristics opposite those of alarm pheromones, since their function is to convey a signal to other members of the species for a relatively long term. Thus, they demand some persistence, though not so much that they remain when their utility is past.…
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