Sentences with phrase «safely estimate this population»
One can safely estimate this population to be in the millions.
http://educationnext.org/ Not exact matches
«Many experts estimate that less than 1 percent of the recreational diving population possesses the knowledge, skills, attitude, and judgment needed to cave dive as safely as possible,» says Johnny Richards, a former attorney who now works full - time as a cave diving instructor in northern Florida and runs the informational Web site CaveDiving.com.