Why isn't the atmosphere a closed system? 1.Closed systems only exist in theory.
2.Closed systems are only for liquids, not gases.
3.The laws of physics do not apply to the atmosphere.
4.Gases from Earth escape from the higher realms of the atmosphere.

In this experiment you were asked to present three possible mechanisms. describe those mechanisms here and include drawings of those mechanisms. how will the bromination of trans-cinnamic acid and trans-stilbene allow you to distinguish between the three possibilities? what would you expect to find in your data in each scenario?

What factors contribute to the effect an environmental toxin has on the human body?

Which is a kingdom? protistachordataprokarya mammalia