I think that this would be carbohydrates, I'm not completely sure though.
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A DNA molecule consists of two strands of nucleotides twisted together to form a double helix. The sugar-phosphate backbone is found on the outside of this helix and the bases are found braching towards the middle. Hydrogen bonds join the thenitrogenous bases and hold the two strands together.
Therefore your answer is sugar and phosphate.
Perhaps the answer is "physical characteristics". I am simply making an educated guess, however I do know early philosophers classified organisms into two groups, Plants and Animals, and identified them based on physical characteristics.
<span>They have various isomer structures often either open chain or cyclic isomers that readily interchange structures. </span>
Yes, c because you can cross out protein because thats healthy and you cant really increase carbohydrate and c fat is the most unhealthy one so. and also fat is what makes you gain weight say theres to much "fat' in food.t
