How many hours difference is
there between Pennsylvania and
Alaska?

As our current atmosphere formed, the concentrations of various atmospheric gases fluctuated. match each gas with the explanation that best describes how its proportion changed during the evolution of the atmosphere.

Telling your brain to slow down and focusing on details are crucial activities in which positive study habit?

Small plane just crashed in your neighborhood. you take a fire extinguisher and blankets to the scene, then stand back and silently gather with others on the scene when you realize there is nothing you can do to . in this situation, gathering quietly with others out of reverence and respect is an example of coping.