Suomi
Englanti
uropygial gland secretory organ, at the base of a bird's tail, that secretes the oil used in preening
grease gland gland located at the end of guinea pig's spine, that secretes a thick, oily substance with which the animals mark their territory
Aloita opiskelu minuutissa
Runsaasti ammattilaisten luomia sisältöjä, joilla opit lähtötasostasi riippumatta
Opiskele selaimessa tai mobiilissa - opiskelu kulkee aina mukanasi