Help me ASAP please for chemistry..

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

How can you use chemical equations to predict the products of the reaction you can carry out?

What type of reaction fuels the processes seen here?