For many americans, the problems inherent in disaster management were clearly demonstrated by fema's (federal emergency management agency) 2005 response to a) global warming. b) the 9/11 attacks. c) the war on terror. d) hurricane katrina.

I don't think B is the answer because 9/11 happened in 2001, global warming has been going on forever. We have been having war on terror for quite a while so the final answer is D Hurricane Katrina because Hurricane Katrina happened around 2005

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].