Facts about Earthworms

1. 08

   Regenerating a lost tail segment takes an earthworm approximately 3 to 6 weeks, though the new tissue never fully restores the original nerve and blood vessel complexity.

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2. 07

   Castings from earthworms can improve soil water retention by up to 40 percent, making their nutrient-rich waste essential for agricultural productivity.

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3. 06

   Charles Darwin observed that earthworms could bury stones and brick fragments by secreting mucus and moving soil around them over the course of several years.

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4. 05

   Earthworms lack eyes but possess light-sensitive cells along their skin, allowing them to detect brightness changes and avoid ultraviolet radiation exposure.

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5. 04

   Soil in temperate regions can contain up to 200 earthworms per square meter, collectively processing tons of organic matter annually through their digestive systems.

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6. 03

   Each earthworm can move through soil at approximately 10 meters per day, with their muscular segments contracting and extending to create forward locomotion.

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7. 02

   Within their five hearts, earthworms circulate blood containing hemoglobin, the same oxygen-carrying protein found in human blood.

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8. 01

   A single earthworm can produce 200 to 300 eggs annually while simultaneously functioning as both male and female through hermaphroditism.

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