In which or areas on the image dose salinity of the ocean increases A.1

B.2

C.3

D.1,2,3

E. none of these

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

Light waves can move through , but they travel fastest when they move through a(n) .

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness