Research is conducted to determine if there is a relation between lung capacity and proximity to coal mines. does the description correspond to an observational study or an experiment?

answer; (cognitive   dissonance);

i have to go with a for this one

abu bakr, was a senior companion and—through his daughter aisha—a father-in-law of the islamic prophet muhammad. abu bakr became the first openly declared muslim outside muhammad's family. abu bakr served as a trusted advisor to muhammad.

answer the senate acts as the court in the case of impeachment,the senate holds the trial serving as the trial and acts as the trial jury;