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.
Out of the choices given, the example of an eukaryote is yeast. The correct answer will be C.
underground creatures
Explanation:
because man never knows what is going on under water all the time
Animals are used for food, products, and services.