Why are frog kidneys considered filters?

1 Answer
SCooke
Oct 8, 2017

They "filter" - remove - undesirable components (wastes) from the bloodstream.

Explanation:

ALL kidneys are biological filters. A "filter" is any mechanism that selectively passes or retains something. It may be light or sound wavelengths, particles, or chemical elements.

Kidneys selectively remove waste product compounds from the bloodstream to prevent a toxic (deadly) accumulation of them in the system.

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