Here's why:
* Elevation and mineral content are independent factors. A lake's elevation (how high it is above sea level) has no direct relationship to its dissolved mineral content.
* Different lakes have vastly different characteristics. Some lakes are located at high elevations but have very low mineral content (e.g., some alpine lakes). Others are at low elevations but have high mineral content (e.g., some saline lakes).
To answer your question, we need more information:
* Which specific lakes are you comparing?
* What are the elevation values of each lake?
* What are the dissolved mineral levels (e.g., salinity, total dissolved solids) of each lake?
Once you provide this information, I can help you determine which lake has a higher elevation or lower dissolved mineral content.