Tides are caused by the Moon and Sun. So, they last forever.

natural resources are replaced by natural processes given reasonalbe amount of time. Soil, water, forests, plants and animals are all renewable resources as long as they are properly conserved.
I guess Mrs. Wilden is right??

why is water a renewable resource but why is ocean tides an inexhaustible resource?

NO! WRong answer LADY! HA HA HA !