vit K//nutrients//stops bad bacteria multiplying//protective layer//helps digest things

contains all the right components in all the right amounts

protein carbohydrates water minerals vitamins lipids fibre

energy source//keep us warm// protect organs

prevents contipation//helps move food in DS

help bodily functions

helps body grow and repair itelf

energy source

makes chemical reactions happen

lung volume bag//peak flow metre//oxygen

deficiency of protein/tto much fluid in tissue//cause swelling under skin cause pot belly//slowly have carbs then protein

iron deficiency/less oxygen without enough red blood cells//tired/lackofenergy/pale//meats fruit and veg

vitamin a def//cause a dim light and harder to distinguish images in a low ligh//coloured fruits

vitamin c def//causes collagen not to be replaced//citruses

vitamin d calcium def//bones soft and weak//dairy milk eggs sunlight