People living in developed nations tend to (choose the correct answer)
a. consume fewer resources per capita.
b. restrict their use of resources.
c. have a smaller ecological footprint
d. use fewer non-renewable resources.
e. consume more resources.

The answer is the magnetosphere.

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].

Earthquake waves that vibrate from side to side and up and down only through solids are known as "seismic waves."hope my answer has you : )