Which body system protects the body against invasion by pathogens?

Match the following italian renaissance artists to their works.

Explain one example of how the u.s has struggles to balance energy independence and environmental

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.