Alexis is using photographs of her recent trip to greece in her informative speech about modern greek culture. how can she best incorporate her photos into the presentation?

Enlarge them or project them.

Explanation:

Alexis can either enlarge the photos and print them out on an A4 scale page and display it while giving her speech or she can request a projector. If a projector is available then Alexis can project the pictures of her recent trip to Greece during the speech about Modern Greek culture. The idea is that Alexis should make the pictures visible and the audience should be able to see what is being highlighted in those pictures. The pictures should aid the point presented in the speech and then can only be done if they are visible to the audience.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

answer; collective security;