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Barnacle adults are sessile; most are suspension feeders with hard calcareous shells, but the Rhizocephala are specialized parasites of other crustaceans, with reduced bodies. Barnacles have existed since at least the mid-Carboniferous, some 325 million years ago. In folklore, barnacle geese were once held to emerge fully formed from goose ...
Black hair is the darkest and most common of all human hair colors globally, due to large populations with this trait. This hair type contains a much more dense quantity of eumelanin pigmentation in comparison to other hair colors, such as brown, blonde and red. [1]
There is less prevalence in people with darker skin. [21] In large-cohort studies, all patients aged 50 and older had at least one seborrheic keratosis. [ 22 ] Onset is usually in middle age, although they are common in younger patients too, as they are found in 12% of 15-year-olds to 25-year-olds, which makes the term "senile keratosis" a ...
Gooseneck barnacles, sea mussels and several species of acorn barnacles soon follow. Further competition is provided by sea palms, the large holdfasts of which may smother or squeeze out the molluscs and barnacles. Sea palms may settle on the mussels and may be carried away in storms, taking the mussels with them.
Like other acorn barnacles, S. cariosus is a filter feeder; when it is under water, the moveable terga at the apex part, and the cirri are extended to feed. When above water, the terga shut tightly for protection and to prevent desiccation. Small barnacles are sometimes "bulldozed" off the rock by the limpet Lottia digitalis while it is grazing ...
As spooky season unofficially kicks off on Friday, October 13, theGrio revisits common superstitions in the Black diaspora. Black horror […] The post From itchy palms to not cutting a baby’s ...
Manhattan-based dermatologist Dr. Brendan Camp, M.D., said that toasted skin syndrome, officially known as erythema ab igne (EAI), is a "pattern of discoloration that occurs in areas of skin after ...
Aquagenic keratoderma, also known as acquired aquagenic palmoplantar keratoderma, [4]: 788 transient reactive papulotranslucent acrokeratoderma, [4] aquagenic syringeal acrokeratoderma, [4] and aquagenic wrinkling of the palms, [2] is a skin condition characterized by the development of white papules on the palms after water exposure.