Problem set: Chemical Plant & Fish; Blood & Kidneys

[Raja]

Hello, Here are some questions and my attempts, can someone kindly guide me.

 

[Raja]

Math question on environmental chemistry.

As simple as it seems? or is there more than meets the eyes? Please help, I'm confused :sad:

 

[Deleted member 4993]

As simple as it seems? or is there more than meets the eyes? Please help, I'm confused :sad:
View attachment 9547

View attachment 9547

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