PLEASE ANSWER QUICK GIVING BRAINLIEST TO THE ONE WHO ANSWERS Describe what happens when iron and oxygen combine. Can the change be reversed?

 Iron combines with oxygen to produce rust, which is the compound named iron oxide.

Explanation:  Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.

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a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..