What is a stimulus? A or B A. Change in an organism’s environment that causes it to react.

B. How the organism reacts to the stimulus.

Americans often refer to a country that is not the united states as a

Marcy tests a solution with a strip of blue litmus paper. the paper turns red. the solution is acidic basic neutral

New communication technologies, improved transportation, and advanced military weapons made it possible for countries to speed up acquiring territory. rule large amounts of territory. fight off competition from opposing nations. expand their economies, which aided in conguest.