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In Many Species, Chemicals That Would Seem to Qualify as Pheromones

question 58

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In many species, chemicals that would seem to qualify as pheromones are sensed via a _____ system.


Definitions:

Federal Surveyors

Government-employed experts who map and measure land, defining boundaries and assessing terrains for various purposes, including land development and conservation.

Rocky Mountains

A major mountain range in western North America, extending from Canada through the United States, known for its breathtaking landscapes and diverse ecosystems.

Transcontinental Railroad

A continuous rail line that connects the east and west coasts of the United States, completed in 1869, facilitating mass migration, goods transportation, and economic development.

Homestead Act

A United States federal law enacted in 1862 that granted 160 acres of public land to settlers for a small fee, assuming they would improve the land by building a dwelling and cultivating crops.

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