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Project title Stoma density and pollutionFeatured science projectScience project video
Difficulty Level Elementary school
Project page  Click here to view this science project

This science fair project was conducted to determine the effect of pollution on the stomata density of coniferous trees. The science fair project was done using samples of pine tree leaves from 3 locations with different levels of traffic flow. 

Instructions preview
1. For this science fair project, the independent variable is the concentration of traffic at the location of the pine trees. The dependent variable is the number of stomata on the surface of their leaves. This is determined by viewing the leaf under a microscope and counting the number of stomata. The constants (control variables) are the size of the trees, the age of the leaves, the size of the leaves and the size of the tape. 2. 5 pine trees at each of 3 different locations are selected for this experiment. The pine trees should be about the .....
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