Which are structures of the excretory system? Select four options.

kidney
spleen
bladder
esophagus
ureter
urethra

Asap many people try to eliminate fat from their diets which is one reason it is necessary for humans to eat fat a) fat is the only way to get energy b) every cell in the body must contain fat c)fat stores less energy than polysaccharides d) saturated fats make blood vessels healthier