Answer:
Bubbles are a sign that the yeast is alive, and that it is performing anaerobic respiration. You should notice that the mixtures with too little and too much sugar do not grow, bubble or foam properly. This is because the yeast needs the perfect amount in order to produce carbon dioxide.
Explanation:
Answer:
Most humans would associate the smell of the doctor's or dentist's with something bad or painful, when on the other hand baking cookies or having a nice smell of Thanksgiving can remind us of tasty food and comfort with family or just comfort in general.
Explanation:
Above ^^
DNA replicates, so that cells can divide, and a person can grow
