The ecosystem with the most concentrated selection of diverse plants and animals in the world is the located in latin america. a. atacama desert b. amazon rainforest c. coniferous forest in the central american mountains d. deciduous forest in the south american mountains

D deciduous forest in the south american mountains

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].

Tropic of cancer and tropic of capricorn