Final answer:
Water is the nonhuman resource that everyone has in common. It is crucial for survival and necessary for various cellular processes, making up a significant percentage of the human body. The majority of Earth's freshwater is stored in glaciers and ice caps.
Step-by-step explanation:
The nonhuman resource that everyone has in common is water. Water is the most essential compound for all living things and is critical for cellular processes. On Earth, about 70% of the surface is covered by water, but only a small fraction is accessible and suitable for consumption by humans and land plants. While human babies are comprised of approximately 75% water and adults about 60%, the constant loss of water through processes such as perspiration makes it necessary for humans to replenish by drinking. Depending on climate conditions, a person may need to drink anywhere from approximately 2 quarts to up to 10 quarts of water per day, highlighting the indispensability of water. Additionally, the majority of Earth's freshwater is contained in glaciers and ice caps, with other sources being lakes, streams, groundwater, and a very small percentage in rivers and lakes.