Once Jared completes the experiment, he will compare the amount of foam between different sets of glasses. Drag each tile to the correct box to identify which variable he is analyzing when he compares each set of glasses.
Tiles
presence of sugar
water temperature
type of respiration
Pairs
Glasses
Variable
A and B
B, C, and D
Band E

i think it is dna, i'm not totally sure but i think it might be.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.