When a volcano erupts, ash can enter Earth's atmosphere. Eventually, the ash falls back down to Earth's surface. Which term describes the falling of volcanic ash to Earth's surface? A. Erosion B. Deposition C. Subsidence D. Weathering

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].

Iwould say d. eye contact and body language because you aren’t using any spoken communication. hope this : )