da koguna Ruwaye ne na ruwa masu gudana koyaushe, suna ciyar da dabbobi iri-iri, na ruwa da na ƙasa, da tsirrai. Suna da mahimmancin gaske ga gandun daji, dazuzzuka da gandun daji, tunda idan babu su rayayyun halittu zasu sami matsalolin ci gaba da rayuwa.
A duniya akwai dubunnan su, amma Shin kun san wanne kogi ne mafi tsayi a duniya? Har zuwa 2008 ba a bayyana ko wanene ke saman wannan jerin masu ban sha'awa ba.
Mene ne kogi mafi tsayi a duniya: Kogin Nilu ko Amazon?
A Afirka mun sami kogin Nilu, mafi mahimmanci a Afirka kuma musamman a Masar, Tanzania, Sudan da Habasha, wanda shine inda ruwanta yake gudana. Kogin ne ya ba da rai ga ɗayan wayewar wayewar kai na zamanin da, na tsohuwar Masar, kuma a yau tana jan hankalin yawancin yawon buɗe ido da magoya bayan tsohuwar tarihin ƙasar.
Ya ɓace cikin Bahar Rum kuma yana da tsayi na 6756 km, wanda yake da ban mamaki. A zahiri, har zuwa 2008 an dauke shi mafi kogi a duniya, amma ... da gaske ne?
Kogin Amazon, kogi ne mafi tsayi a duniya
Gaskiya ne kogin Nilu yana da matukar mahimmanci kuma yana da tsayi sosai, amma a Amurka akwai wanda ya zarce shi: Amazon. Yana da tsayi na 6992kmFiye da Kilomita 236 fiye da Kogin Nilu Amma me yasa akayi rikici?
A bayyane, an yi imani cewa kogin ya samo asali ne daga arewacin Peru maimakon kudu, har sai da wasu gungun masana kimiyya suka yi balaguro zuwa Peru. Yanzu an san cewa yana sa a na biyar na duk ruwan kogin da ke doron duniya, wanda ya sanya shi ba kawai mafi kogin mafi tsawo ba, har ma mafi girma a duniya.
Amazon shine, ba tare da wata shakka ba, mafi mahimmin kogi a duniya, ba a banza ba, yawan ruwansa ya kai har 300000 m3 / s, yana ba da rai ga gandun daji mafi girma a duniya, wanda ake ɗauka huhun duniyarmu.
A mafi girman matsayi yana iya samun har zuwa Nisan kilomita 11, da kuma cewa a lokacin rani. A lokacin damina, yankin da ambaliyar ruwan ta kwarara ya tashi zuwa murabba'in kilomita dubu 350.000.
Tana malale dukkan rabin arewacin Kudancin Amurka (kusan kashi 40%), gami da ruwan sama kamar da bakin kwarya. Saboda wannan dalili, koyaushe yana ɗaukar ruwa mai yawa. A zahiri, bakinta - wanda yake cikin Tekun Atlantika- yana da faɗi da zurfi cewa jiragen ruwa masu zurfin zurfin teku sun tashi cikin kashi biyu bisa uku na tsayin kogin.
Rayuwa akan Kogin Amazon
Kasancewa mai tsayi da kasancewa a kan mahaɗa, wannan kogi ne wanda ke ciyar da dabbobi da tsire-tsire da yawa, kamar:
Animales
- Kaza gizo-gizo (Farhosidae): Ya auna tsakanin 5 da 7cm, kuma yana da baƙi ko launin ruwan kasa. Jikinta ana kiyaye shi da gashi. Ba haɗari bane, amma idan gashi ya shiga cikin membobin ku na mucous kuna iya jin haushi.
- Mala'ikan teku (gymnosomata): tudadden teku ne mai haske, ba tare da harsashi ba. Lokacin yin iyo, yana motsa abubuwa masu kama da fukafukan mala'ika, waɗanda sune suke ba shi suna.
- Wutar lantarki (electrophorus lantarki): ana kiranta haka saboda tana iya fitar da wutar lantarki har zuwa 600 volt lokacin da ake barazanar ko lokacin farauta.
- hummingbird (Trochilinae): Tsuntsaye ne na gandun daji na Amurka. Yana da karami ƙwarai, da yawa ƙwarai har nauyinsa yakai gram 2. Yana ciyar da nectar na furanni.
- blue macaw (Annoorhynchus hyacinthin): Kyakkyawan tsuntsu ne wanda ke rayuwa cikin ƙungiya-ƙungiya kuma cewa, da zarar ta zaɓi abokiyar aure, sai ta kiyaye ta har abada. Yana ciyar da 'ya'yan itace da' ya'yan itace.
- mujiya malam buɗe ido (kirari): shi ne ɗayan manyan malam buɗe ido. Namiji yana da nauyin tsakanin 0,9 da 1,5kg kuma mace tsakanin 0,8 da 1kg. Tana cin ciyawa, kuma zata iya rayuwa tsakanin watanni 3 zuwa 2.
- Tetra (Tetra): Kifi ne wanda yakai tsawon 4,5cm kuma yayi ja tare da ratsin shudi mai lantarki daga kai zuwa jelar fin. Yana zaune ne a cikin rukuni-rukuni, a cikin ruwa mara dadi inda akwai ciyayi da yawa.
- Piraccu (Arapaima): Shine kifi mafi girma a duniya. Tana iya auna sama da 3m a tsayi kuma tayi kimanin kilogram 250. Tana ciyar da wasu kifin da sauran ƙananan dabbobi ta hanyar tsalle daga ruwa.
tsire-tsire na ruwa
Ruwa fern (Azolla): Yana da ganyen oval waɗanda aka haɗe a kusa da tushe. A saman ɓangaren ganyayyaki yana da gashi mai kauri wanda yakai 2,5cm. A cikin shekarunta na girma, yakai kimanin 2cm.
- Ruwan hyacinth (Eichhornia): suna iya girma har zuwa 90cm tsayi. Ganyensa kore ne mai duhu kuma madaidaita a sifa.
- letus ruwa (Pistia hanyoyi): an rufe shi da kyawawan gashi a saman da ƙasan waje na shuka. Ganyensa yakai kusan 4cm tsayi kuma suna shawagi a saman kogin.
- giant water lily (Eichhornia hadarurruka): yana zaune a cikin ƙarshen ƙarshen kogin. Ganyensa ya kai 90cm a diamita, tare da kashin baya na kariya a gindin gammarsa don kare shi daga kifi.
Kuma da wannan muka gama. Shin kun san wanne kogi ne mafi tsayi a duniya?