Final answer:
Earth is in dynamic equilibrium through processes like hydrostatic equilibrium of the atmosphere and oceans, wherein pressure balances weight, and geophysical processes where landmass creation and erosion occur simultaneously.
Step-by-step explanation:
The Earth is in a state of dynamic equilibrium, which means that it maintains a steady condition through a balance of continuous, opposing processes. For instance, the Earth's atmosphere is in hydrostatic equilibrium, where the pressure at any given altitude is enough to balance the weight of the air above it. As for the oceans, they too are in hydrostatic equilibrium, ensuring that the pressure increases with depth. This concept also extends to Earth's geophysical processes, like volcanic eruptions and mountain formation, where the creation and erosion of landmasses occur simultaneously over geological time scales.