Pressure increases as the depth increases. The pressure in a liquid is due to the weight of the column of water above. Since the particles in a liquid are tightly packed, this pressure acts in all directions.
<u><em>Pressure increases as the depth increases. The pressure in a liquid is due to the weight of the column of water above. Since the particles in a liquid are tightly packed, this pressure acts in all directions. For example, the pressure acting on a dam at the bottom of a reservoir is greater than the pressure acting near the top.</em></u>
Yeast is essential to the rise of bread, not only because it produces carbon dioxide, but also because it produces alcohol that evaporates as the bread bakes, and because it helps develop and strengthen the gluten network