By what standard does the Linnean plant taxonomic system group plants? HELP PLZZZ a. by shared growing climate
b. by shared colors
c. by shared structural traits
d. by shared size

Ithink it is space that makes up 70 percent

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 : )