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 answer is: reproductively

i think i spelled it wrong lol

anyways hope i

-lavira: )

the correct option is option d

2%? i tried finding the exact sorry if it's not 100% correct ; -;

carbon traps heat so more of it makes it hotter causing global warming. during the ice age carbon levels in the atmosphere were low so it got very cold. so the common things between them is carbon levels in the atmosphere.