Answer:
A convention is an agreement between 2 countries helping over a particular problem, less formal then a treaty . Also a convention is a gathering where people meet and discuss a problem or similar interests.
"<span>d. high levels of both minerals and salinity" would be the best option, since without direct contact with larger bodies of water it's very hard for the minerals and salt to dissipate and "spread out".</span>
Can u type up the work work of the code so I can do the summary for u