30. altogether just those six chnops elements make up 97% of the weight of his body, but what about the
other 3%? those are what's called the
elements.

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..

area of focus

the answer should be in the picture.