Unlike the modern concrete mixture which erodes over time, the Roman substance has long puzzled researchers. Rather than eroding, particularly in the presence of sea water, the material seems to ...
A variable is conservative if its value in a mixture of two parcels of seawater is the average of its values in the two initial parcels. Conservative variables are very useful in making budgets.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback