14. Which best describes how ice cores can provide scientists with evidence for climate change over a period of time? A. Ice cores form only during ice ages. . B. Dark rings in the ice core indicate climate change. C. The temperature of the ice core is lower in layers formed when tempera D. The concentration of gases in the ice core indicate colder or warmer te 15 Which is the best evidence that Earth went through an Ice Age?

Maybe a horizontal because its a pattern

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].