I think that it is B wave patterns good luck!!!!
Common Citizenship.
Participatory Citizenship.
Represented Citizenship.
Private and Public Citizenship.
Global Corporate Citizenship.
Hope I Helped :) <span />
It would be letter A which is energy. The other three are used in weather forecasting due to the fact that the atmosphere is fluid and weather and climate is caused by uneven heat from the star in our solar system which is the Sun to the Earth in which heat transfer occurs
Pleistocene
Explanation:
The Pleistocene epoch began about two million years ago and ended about 11,700 years ago.