4. A sample of a new plastic has a mass of 245 grams. The sample is 22.5 mm long, 4.2 cm wide and 5.1 cm deep. If the volume is the length x width x height, what is the density
of the plastic in g/cm”? Show your work. (Hint - watch the units)

Iknow the answer is a but i don't know why

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?

What are four significant sources of ghgs that come from wostem washington?