Which gas is most abundant in earth’s atmosphere?
a. oxygen
b. nitrogen
c. carbon dioxide
d. methane

Prior to 1994, rwanda's ethnic population was composed of a. a tutsi minority and a hutu majority b. a hutu minority and a tutsi majority c. an even number of hutus and tutsis d. a rwandan majority with hutu and tutsi minorities select the best answer from the choices provided. a b c d

Which of the following items would serve as a primary source for a historian studiying the american civil war

The american public was excited by the invention of the railroad system. true false