Each student group was given the following: For each group: 2 Alka-Seltzer® antacid tablets 1/2 sheet of blank paper 1 film canister (with hole in lid) 3-4" (2 cm) piece of foam for a fin The students all brainstormed and came up with variables that might be manipulated to win the boat challenge. The group data is compiled in the data table. Compare the criteria and results of the four student groups. Which group had the fastest boat? A) Design 1 B) Design 2 C) Design 3 D) Design 4

It should be cryosphere and hydrosphere

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.

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