In flatworm solid and liquid waste is excreted through which of the following options..
a; digestive system
b; excretory tubules
c; respiratory system
d; circulatory system

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

maybe because its impossible for balloons to lift a whole entire house.