Classify the type of reaction: Mg + Cu(NO3)2 + Mg(NO3)2 + Cu
O Combustion
O Synthesis
O Double Replacement
O Single Replacement

Why did southern business leaders want to increase the number of slaves

What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m

Quickly what are the following of organisms that existed over a wide area but only for a limited time period called a.soft fossils b.mold fossils c.index fossils d.trace fossils