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spec: While it may not be possible to do so in all circumstances , the intention is to provide appropriate assistance to staff and to take a positive attitude to making adjustments . For this reason , we strongly endorse a series of projects over the next few years to test the suitability of SAR interferometry for volcano monitoring and to determine requirements for future satellite missions , partly or wholly dedicated to volcano monitoring . These teams would be funded to exploit data from both NASA and non-NASA sources , and would be charged with development and testing / validation of new applications , both scientific and commercial in nature . In the Armed Services committee hearing this year Dr. Hamre quoted , `` If SAFE passes people will die . No one cultivar is the best choice for all conditions . Because of their high moisture content , individual components of forest canopies and other vegetative covers ( e.g ., leaves , branches , trunks ) represent discrete scattering and absorbing elements to the microwave power transmitted by imaging radars . Members of a steering committee , including the Phoenix Mayor ' s Commission on Disability Issues , worked hand in hand with the City of Phoenix Aviation Department to make sure that this system was fully accessible to all airport visitors . According to a recent survey reported on in The Economist , mobile phone subscriptions in Sub-Saharan Africa rose by more than 150 % last year . `` In America you can say what you feel . Inspect all new plants and their associated soil carefully for the symptoms and signs noted above . Growing up in urban Montreal near the city 's famous March ? While a good case can be made that any mass in space is useful ( e.g ., reaction mass , radiation shielding , etc. ) , certain raw materials will probably be more in demand than others ( e.g ., metals , volatiles , carbon , etc. ) ( ref . Tens of thousands of families are starving . Stream channels respond on short time scales to regional events , such as changes in discharge during flooding , and to local changes , including increased runoff from urbanization . Switchgrass stands up in the winter and provides food for birds and cover for wildlife , and can be quite attractive with hoarfrost or ice on the flowers . In this chapter , we address how surface deformation data can be used for the very practical benefit of eruption prediction and to address even more fundamental scientific problems bearing on understanding magmatic systems . Another requirement is that recipients demonstrate the ability to speak about their research , no matter how technical it might be , in terms understandable to a broad general audience . A national SAR program for oceans and ice can be formulated considering the concerns of present-day ocean and atmospheric science , the history of past achievements in SAR ocean observations , the state of development of ocean backscatter and hydrodynamic theory , and the recent instrument advances in SAR engineering . Over major portions of the middle and high latitudes , and at high elevations in the tropical latitudes , snow and alpine glaciers are the largest contributors to runoff in rivers and to ground-water recharge .