The air as there are many elements in the air
Drinking salt water is harmful because it messes up the salt concentration in each of your red blood cells. It over loads the salt in it and causes the cell to swell up and burst due to it trying to let in more water to balance the salt concentration out.
Answer;
-Temperature
Explanation;
Isotherms cannot cross because to cross would indicate two different temperature for the same location.
Isotherms are lines that connect points of equal temperature on weather maps, so at every point along a given isotherm the temperature values are the same.
An isotherm should never split, cross, or touch another isotherm, because then at the crossing point it would have two different temperature values, which is physically impossible.
I believe it is Osteocyte - Compact Bone Tissue - Femur - Skeletal System
