If the frequency of a wave is increased, its energy decreases fluctuates stays the same increases

The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion

Add the map and the options so i can further you, you so much. : )

Dif i’m not mistaken