However, higher concentrations of these heavy metals imposed by the crude oil pollution have negative effects on the vegetations. In Figure 1(f), highest concentration of Zinc was observed in polluted maize (651 ppm) while the lower concentration was observed in unpolluted maize (280 ppm). Similarly, trend was observed for cowpea, soil samples and vegetations from sampling sites. In Figure 1(g), higher concentration of Copper was observed in polluted maize (9.243 ppm), polluted cowpea (15.383 ppm), polluted site vegetation (11.896 ppm) and polluted site soil (18.961 ppm). Reverse was the case for unpolluted samples.