As the wavelength of a wave gets longer, the frequency. a. increases. b. decreases.
c. stays the same. d. is not related.
Please help me

Which of the following was a key accomplishment of the people of songhai? a. they had a strong military and became the largest empire in west africa. b. they established a center of islamic scholarship. c. they worked with iron and prospered from the gold-salt trade. d. they dominated in the trade of ivory, enslaved people, and animal skins.

Most democratic have a government with three branches : executive,legislative and judicial.in canada,the legislative branch is the

The term "jim crow" is used to describe which of these? a) bans on hunting b) segregation of the races c) preventing women from voting d) creating more public schools