The system diagrammed above is an example of BLANK flow and is BLANK efficient than BLANK flow. Choice A., concurrent; less; countercurrent ,Choice B., concurrent; more; countercurrentChoice C., countercurrent; less; concurrentChoice D., countercurrent; more; concurrentNote:A figure which flows the flow of blood in human

Based on the body structures of these animals, which two conclusions are scientifically the skeletal structure of the gorilla and chimpanzee suggest a common evolutionary ancestry. the dog and frog share a closer evolutionary ancestry than the gorilla and chimpanzee. the dog is more closely related to the frog than it is to the chimpanzee. all four organisms share a common vertebrate ancestor.