Which descriptions are true of the amazon river?
choose all answers that are correct.

a.
it moves freshwater more than 100 miles into the ocean.

b.
it carries more fresh water than any river in the world.

c.
it is the longest river in the world.

d.
it starts in northern brazil and flows south.

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].