The kidneys make two main hormones, vitamin D and erythropoietin. Vitamin D is essential for a number of different functions in the body. Most of the vitamin D that is in the blood is inactive and it is modified by the kidney and other tissues to activate it.
B a very large molecule made of smaller molecules
Consumer is a person who purchases
Producer is someone that makes the things consumers purchase
Answer:
seleccion natural, habilitar
english translation: natural selection, and habilitate.
