What is the composition of the outer core of Earth? o A. solid iron only
B. liquid iron only
C. solid iron and nickel
D. liquid iron and nickel

I believe its D

It wants me to type more then 20 character so imma just say this

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..