AEST STD 4
Chamberlain College Of Nursing
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Exam (elaborations)
AEST STD 4 High Grades Earned.
photosynthesis 
Which process uses chlorophyll to change carbon dioxide and water to sugar? 
habitat 
The area or type of environment in which an organism or biological population lives 
is the: 
21% 
What percentage of the air is oxygen? 
sulfur 
The pale yellow element occurring widely in nature is: 
radon 
Which of the following is a colorless, radioactive gas formed by the disintegration of 
radium? 
air conditioners/refrigerators 
Chlorofluorocarbons are used in? 
photosynthesis 
Plants giv...