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Written...The letter should be written on good-quality paper....hopefully i helped....plzz give brainliest answer thnxx!!
The correct answer is B. three(3) cups of milk per day.
Active absorption :- It is a up stream absorption in which use of specified Protein along with ATP is used to absorb substance like ions etc. Active absorption occur against the concentration gradient
Facilitated diffusion :- It is a down stram absorption in which use of special protein is there but no ATP is used to absorb substance like water in plant cell . Facilitated diffusion occur through concentration gradient
Diffusion :- It is a down stream absorption in which no requirement of special protein and ATP molecules is there to absorb substance like glucose etc . Diffusion occur through concentration gradient.
D. The optimal amount of physical activity needed to maintain weight is unclear.
