PART A. Fill in with the necessary word to complete the thought below. Choose and answer on the space provided. (Note: There are words that can be use twice)
1.___take in oxygen from the 2.___ animals and give off carbon dioxide during respiration. This occurs day and night. 3.___ however, give off 4.____ and take in 5.____ when they 6.____ during daytime. At night, when 7.____ are in darkness and cannot photosynthesize, they breathe just like an animal. They take in oxygen and give and give off 8. ___
