Question

The hydrologic cycle holds the Earth’s water systems in dynamic equilibrium. This means that:

A) The concentrations of water in the atmosphere (in the oceans, lakes, etc.) are constantly and dramatically changing.
B) The rate of evaporation equals the rate of condensation.
C) The concentration of water in the atmosphere is always equal to the concentration of water on the surface of the Earth and underground.
D) The concentration of water vapor in the atmosphere is constantly and steadily changing.

Answer 1

The hydrologic cycle maintains dynamic equilibrium by ensuring the rate of evaporation equals the rate of condensation, balancing the water within Earth's systems.

Step-by-step explanation:

The hydrologic cycle, also known as the water cycle, maintains dynamic equilibrium of Earth’s water systems. This means that the rate of evaporation equals the rate of condensation, not that the concentrations of water in various forms are always the same or changing dramatically or steadily.

The dynamic equilibrium indicates that while water is continuously moving and changing states among liquid, vapor, and ice, the overall amount of water within the various reservoirs and processes remains balanced over time. Solar energy and gravity are the primary drivers of this cycle.