Answer:
C) [ ] Constant
Step-by-step explanation:
The amount of water on Earth is relatively constant over geological time scales. While water can change its form (liquid, solid, gas) and location (oceans, lakes, atmosphere, underground reservoirs), the total amount of water on Earth remains relatively stable. Water is continually cycling through various processes, including evaporation, precipitation, and runoff, but the total amount of water remains roughly the same.