Which of the following elements are metals? A.
fluorine (F) and argon (Ar)
B.
iodine (I) and carbon (C)
C.
oxygen (O) and selenium (Se)
D.
potassium (K) and chromium (Cr)

Can someone me with 3 and 4 plz. this is for masteries test.

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world