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Use Ratios and Proportions
Grade Level
AP Biology
APB.037 Use Ratios and Proportions
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Leaf A has 45 stomata in a 0.15 square millimeter field of view. Leaf B has 60 stomata in a 0.30 square millimeter field of view. Which calculation compares stomatal density of Leaf A to Leaf B?
A
45/60 = 0.75
B
(60/0.30) / (45/0.15) = 0.67
C
0.15/0.30 = 0.50
D
(45/0.15) / (60/0.30) = 1.5
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