What is a potential benefit of using alley cropping?

slowing soil erosion
increasing cash crop yields
decreasing labor costs
shifting agriculture to new areas

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