What is the charge of the nucleus ? 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?

Identify and describe the three ways that mutations affect organisms.

Based on its chemical properties, identify the position of each chemical family on the periodic table.