Io experiences tidal heating primarily because a) it is located very close to jupiter. b) it is made of relatively soft materials that deform quite easily. c) it has an elongated shape that makes it look more like an egg than a sphere. d) its elliptical orbit causes the tidal force to vary as io orbits jupiter.

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].

Answertropical depression;