Read the passage below and answer the questions that follow.
Most of the fresh water that is available for human use cannot be seen—it exists underground. When it rains, some of the water that falls onto the land flows into lakes and streams. But much of the water percolates through the soil and down into the rocks beneath. Water stored beneath the Earth’s surface in sediment and rock formations is called groundwater.
As water travels beneath the Earth’s surface, it eventually reaches a level where the rocks and soil are saturated with water. This level is known as the water table.In wet regions, the water table may be at the Earth’s surface and a spring of fresh water may flow out onto the ground. But in deserts, the water table may be hundreds of meters beneath the Earth’s surface. The water table is actually not as level as its name implies. The water table has peaks and valleys that match the shape of the land above it. Just as surface water flows downhill, groundwater tends to flow slowly from the peaks of the water table to the valleys.