Which mountains are very old in Canada?

Cordilleran
Mackenzie
Rocky
Appalachian

Which environment would most likely not contain fossils? a a thick deposit of cracked, dried mud b sediment deposited in a sandy river bed c intrusive rock formed from cooled magma d layers of sand accumulated for a century

What body of water is the second cataract of the nile river submerged under

Given f(x) = 3x= 1 and g(x) = 2x-3, for which value of x does g(x)= f(2)? its for algebra