Taangiyada yar yar ee dareeraha ah ee dareeraha ah waxay door muhiim ah ka ciyaaraan meelo badan oo ay ugu wacan tahay kartidooda haynta heerkulka heerkulka hoose ee heerkulka ah iyo xog-ururinta.
Gaar ahaan loogu talagalay samadaha bayoolojiga ee u baahan in si joogto ah loo keydiyo, taxanaha la qaadan karo waa haanta yar ee dareeraha ah ee dareeraha ah.
