Listed below are some of the biosphere's major influences on greenhouse gases. 1  Plants: Carbon dioxide is taken out of the atmosphere by plants during the process of photosynthesis. This promotes cooler climates. 2  Farm animals: Methane gas is produced as farm animals such as cattle and sheep digest their food.
Signal intelligence incorporates the sub-disciplines of communications intelligence (COMINT) electronics intelligence (ELINT), and foreign instrumentation signals intelligence (FISINT). COMINT has the greatest impact on the day-to-day performance of Army missions.
Signals intelligence (SIGINT) is intelligence-gathering by interception of signals, whether communications between people (communications intelligenceâabbreviated to COMINT) or from electronic signals not directly used in communication (electronic intelligenceâabbreviated to ELINT).