In each of the following sets of body parts or substances or processes, pick out the one item which overall includes the remaining four.
(b) Skin, liver, lungs, kidneys, excretion.
Excretion:
In each of the following sets of body parts or substances or processes, pick out the one item which overall includes the remaining four
CO2, bile pigments, water, excretion, urea.
Fill in the blanks appropriately OrgansExcretory wastes(a) Kidneys⋯(b) Lungs⋯(c) Liver⋯(d) skin⋯