For which object would a geologist use carbon-14 dating to determine age? a. The bones of animals
b. Rocks older than 50,000 years old
c. Types of Sedimentary rocks
d. Parts of Volcanic rock

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..

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.