This makes it more difficult for the body to effectively use the same amount of oxygen as it would on the ground.
VOA: special.2009.07.14
But,there was not enough information about the stars to use this method effectively.
VOA: special.2010.07.14
"We have good partnerships among the countries within each agro-eco system so that through this twinning they can learn lessons from each other and work together effectively through time."
VOA: special.2010.02.08
"One of the jobs of the president, whether you are named Bush or Obama, is to go out there and reassure people and to show you are in charge and to send a signal to potential enemies out there that this will not be tolerated by any American leader, and they did not project that power effectively,".
VOA: standard.2010.01.06
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