(picture not licenced under creative commons) shell : the shell opening is oval and the umbilicus is narow and almost closed. the lip is somewhat thickened and the surface of the shell is smooth. the colour varies from light to dark brown, sometimes sligthly green. operculum: times higher than wide and...
, less then mm. --> acroloxidae shell think and heavy, with colourful pattern at the outside. --> septaria (neritidae) shell without colour pattern, medium thick, relatively high shell. --> ancylini (planorbidae) drop-shaped shell: heavy, drop-shaped shell, often with colourful pattern. small, non-concentric...
a trademark is basically any word, name, symbol etc. which is used to identify and distinguish products or services of one specific seller or service provider from those of other competitors in the market. it also indicates the source of the products or services. what trademarks are not registrable?...
including the blood fluke), or have their sexes differentiated, like the roundworms. all helminths produce eggs (also called ova) for reproduction. eggs[ edit ] analysing for helminth eggsin samples of feces from a dry toilet in kenya processed helminth eggs samples from a dry toilet in kenya generally...