Which of the following correctly represents expression (90-30)÷3 select all that apply

Which is the largest ethnic group in guinea? malinkéfula (correct)kissisoussouand another question. guinea has always had a stable government led by elected presidents.truefalse (correct)

Some fossils provide evidence to suggest that earth's climate has changed over time. which information can scientists obtain from these fossils? check all that apply

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.