What changes is antartica experiencing ? and a brief summary of its location

In a nutshell, Antarctica is experiencing some drastic changes. The most drastic of which include climate change, where the climate is getting hotter, due to some natural causes. The result of this is the ice melting which can make some species such as polar bears, penguins, and seals extinct, due to not having anywhere to migrate to, them not being 100% sea animals.
Antarctica is located in the south pole of the Earth, directly under the north pole (Arctic). These changes are also present in the arctic. 

B.a pop up at ion changes in response to a change in the environment.

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].