Why is freshwater considered a limited resource? A. It cannot be renewed
B. It is found underground
C. It can be easily polluted
D. It is not evenly distributed

This is what i did 45-5=4040÷4=10so there are 10 white marbles but am not sure is just a question that am not sure

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.