describes ice experiment

Which of the following best describes why ice was used during this experiment?

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Does ice prevent the escape of gases?

Ice Cubes. "Cloudy" ice cubes, like these, form as water freezes quickly. As ice forms on the surface of the frozen water, air bubbles cannot escape.

Which of the following best describes how the structure of ice?

Which of the following best describes how the structure of ice benefits the organisms that live in the water below? The water molecules in ice are closer together than those in liquid water, so the ice prevents the passage of air to the water, maintaining a constant gas mixture in the water.

How does the structure of ice benefit organisms?

In lakes and ponds, ice forms on the surface of the water creating an insulating barrier that protects the animals and plant life in the pond from freezing. Without this layer of insulating ice, plants and animals living in the pond would freeze in the solid block of ice and could not survive.

Which of the following best describes why the disk rose to the surface faster in the more concentrated hydrogen peroxide solution?

Which of the following best describes why the disks rose to the surface faster in more concentrated hydrogen peroxide soloutions? The higher substrate concentrations in the more concentrated solutions speeded the reaction.

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