Why are kidneys on frogs opposite to humans?

What is the downward displacement of the kidney and it condition is a floating kidney? Does pumanary fibrosis come only by the mother? What is the normal body temperature of 3 month old in degrees Celsius? What organ in the digestive system is responsible For nutrient absorption? What is the normal HCG level at 6 weeks? What is respiratory rate? What does it mean if urine is very salty? What are rectal scissors used for? Can a dehumidifier or a humidifier help pleurisy? Is it normal for an 18yr old and a 57yr old to be friends? How During the contraction of muscle cells which fiber is used? What is the most common disease of the female reproductive system? Do you ever get new taste buds and how do you get new taste buds? Picture with acupuncture points on the sole? Is it dangerous if prostate is bleeding? What does a low polys count mean? What are some substances that are filtered from the lymph while it is in lymph nodes? Why would someone rapidly lose weight? Is it possible to improve cardiovascular fitness without increasing respiratory fitness? Which group experienced an early depression in the 1920?