¿Cual es la diferencia entre epidemia, pandemia y endemia?

Why does the blending of many different diciplines present both challenges and opportunities to enviromental scientist?

The double-blind procedure is most for a.random assignment b.the placebo effect c.operational definitions replication d. standard deviations

Will give ! need latin ! translate the following sentences ! bellum ab romanis in (against) graecos gestum est puellae ab nautus graecos pugnare gladiis doctae sunt dona magna ab pueris pulchris puellis parvis data erunt maga regni ab regina mala amatur ( dont use translators)