What is the definenition of the word pathogen?

What role and side did italy fight on during world war 1? why did they change sides? write this in your own words.

Which of the following was not part of roman empire a: syria c: anatolia b: greece d: russia h. e.l. p asap

How does cooperative federalism work in the united states? a. state and federal governments have different and overlapping responsibilities b. branches of the federal government can check one another's power. c. when amending the constitution, citizens vote directly. d. bills passing the house of representatives must also pass the senate.