Within a period, what happens to the atomic radius as the atomic number increases?

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

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