As early map makers concluded, the shorelines of South America and Africa coincided nicely. Suggest some early evidence indicating that these two landmasses were once joined and in some way had been torn away from each other.

South America and Africa were connected aim the Paleozoic, when the Pangea continent existed. All the continents where one landmass. “Pan”means all, and “Gea” means earth

It's lithogenous i believe of course i looked it up.

Amath expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).example :   8+b8+b  or  a−3a−3in algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.example 1:   x=4+2x=4+2  , [here, we can observe that the variable is present only on one side of the equation].example 2:   2x+3=x+42x+3=x+4  , [here, we can observe that the variables are present on both side of the equation].