B. The oldest crust is closest to the mid-ocean ridge.
The kidneys contribute to waste management by recycling metabolic products and converting toxic substances into less toxic ones.
Kidneys are an important organ of animals as they provide a channel for the disposal of body waste and simultaneously regulate the balance in the level of salt and water in the body.
Kidneys work as microfilters that are capable of eliminating dissolved and suspended forms of ammonia, uric acid, urea, creatine, creatinine, amino acids, excess salts, and water along with proper disposal of organic waste which altogether constitutes the metabolic waste of the body. These substances before being finally excreted from the boy undergo a last round of reabsorption.
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Answer:
my guess is C
Explanation:
All you have to do is eliminate the ones that don't make sense and c is the only one left
Nose, mouth, pancreas, kidney, tell me if i missed some
