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Like other hydras, Hydra vulgaris cling to a base object with a "foot" pad, shaped like a disk. The Hydra moves by releasing its grip on its base and is carried away by the current. H. vulgaris can also move by bending over, grabbing a surface with its tentacles, releasing its grip with its "foot" and flipping over itself.
The hydra effect or hydra paradox owes its name to the Greek legend of the Lernaean Hydra which grew two heads for each one cut off, and is used figuratively for counter-intuitive effects of actions to reduce a problem which result in stimulating its multiplication. Most notably, scientists have proposed that ecological systems can exhibit a ...
Hydra viridissima is a species of cnidarian which is commonly found in still or slow-moving freshwater [2] in the Northern temperate zone. Hydra viridissima is commonly called green hydra due to its coloration, which is due to the symbiotic green algae Chlorella vulgaris which live within its body. [ 3 ]
Hydra (/ ˈ h aɪ d r ə / HY-drə) is a genus of small freshwater hydrozoans of the phylum Cnidaria.They are native to the temperate and tropical regions. [2] [3] The genus was named by Linnaeus in 1758 after the Hydra, which was the many-headed beast of myth defeated by Heracles, as when the animal has a part severed, it will regenerate much like the mythical hydra's heads.
The New York Times' recent game, "Strands," is becoming more and more popular as another daily activity fans can find on the NYT website and app. With daily themes and "spangrams" to discover ...
If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1300 ahead. Let's start with a few hints.
How the Male Pufferfish Attracts a Mate. In the world of animals, it can be hard to be a male looking for a mate. Some animals, such as lions, need beautiful, full manes to attract females.Others ...
H. vulgaris may refer to: Hippuris vulgaris, the common mare's tail, a common aquatic plant species found in Eurasia; Hydra vulgaris, a small freshwater hydroid species; Hydrocotyle vulgaris, the marsh pennywort, a small creeping perennial herb species native to North Africa, Europe, Florida and west to the Caspian region
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