When blood pH decreases, the urinary system helps to maintain the extracellular fluid pH by 01.
excreting excess hydrogen ions and reabsorbing bicarbonates
2. synthesizing buffers
03
retaining carbon dioxide in the filtrate
4. excreting filtrate

the elements of art are the visual tools that the artist uses to create a composition. these are line, shape, color, value, form, texture, and space.

the principles of art and design are balance, contrast, emphasis, movement, pattern, rhythm, and unity/variety.