2. A student wants to find out if the rainfall in her town contains pollutants. The best way to gather this information would be to collect:
A:
One sample on one rainy day.
B:One sample a day on several rainy days.
C:Several separate samples on one rainy day.
D:Several separate samples on several rainy days.

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?

Why doesn't heat added to water make the tempature rise above 100c

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 4.20 mol fe and 6.70 mol nio(oh) react?