Which of the following contribute to maintaining the high osmolarity of the renal medulla?

I) active transport of salt from the upper region of the ascending limb

II) the spatial arrangement of juxtamedullary nephrons

III) diffusion of urea from the collecting duct

IV) diffusion of salt from the descending limb of the loop of Henle

#Question id: 4573

#SCPH05 I Biotechnology

Which of the following pieces of evidence most strongly supports the common origin of all life on Earth?

#Question id: 4573

#SCPH06 I Botany

Which of the following pieces of evidence most strongly supports the common origin of all life on Earth?

#Question id: 4573

#SCPH28 | Zoology

Which of the following pieces of evidence most strongly supports the common origin of all life on Earth?

#Question id: 4574

#I Life Science/ Life Sciences Group – I-V

Ichthyosaurs were aquatic dinosaurs. Fossils show us that they had dorsal fins and tails, as do fish, even though their closest relatives were terrestrial reptiles that had neither dorsal fins nor aquatic tails. The dorsal fins and tails of ichthyosaurs and fish are

#Question id: 4574

#SCPH05 I Biotechnology

Ichthyosaurs were aquatic dinosaurs. Fossils show us that they had dorsal fins and tails, as do fish, even though their closest relatives were terrestrial reptiles that had neither dorsal fins nor aquatic tails. The dorsal fins and tails of ichthyosaurs and fish are

#Question id: 4574

#SCPH06 I Botany

Ichthyosaurs were aquatic dinosaurs. Fossils show us that they had dorsal fins and tails, as do fish, even though their closest relatives were terrestrial reptiles that had neither dorsal fins nor aquatic tails. The dorsal fins and tails of ichthyosaurs and fish are