The giraffe weighs much less than the weight of all the food that the giraffe has ever eaten. What happened to all the weight of the food? Where did the atoms in the food molecules go?

Explanation:

The energy from the food was expended during the life cycle of the giraffe, the food was expended and turned into calories the are the used for basic cell processes such as movement and energy production

it's anything that aren't producers and consumers.

explanation:

you've got to be clear on what "this" is

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.