The taste which we can detect already at very small concentrations is salty taste.
The reason why we have a special affinity for tasting bitter things. The reason why we can taste bitter things at extremely low concentrations is because potentially dangerous compounds can be bitter and it made evolutionary sense for organisms to adapt to taste bitter things.
Answer from: Quest
d. groundwater flows through the subsoil and deposits minerals.
Answer from: Quest
A) the sequence of bases would halt the production of any proteins.