Conclusion

After conducting AP Lab #12, it became quite evident that temperature and light greatly affect the level of dissolved oxygen found in an aquatic ecosystem, and that to become a successful and productive water source dissolved oxygen levels must be high. Although our data does not support our final assertion  we were able to see that the amount of dissolved oxygen content varies inversely with temperature and directly with light. It is because our data is so incorrect which is why it does not support our final assertion that as water becomes cold dissolved oxygen increases and as water receives more light dissolved oxygen also increases. Cold water expose to great amounts of light is the way to properly grow and nurture life. All in all, our hypothesis was correct in that cold water and light were most beneficial to an aquatic ecosystem, although our data does not clearly show this. We use this lab to further understand the affect that abiotic factors have on biotic organisms.