Oxygen-rich blood is sent to the rest of the body through the

What's the waste product of electrons and pyruvate combining in fermentation?  

Write the balanced chemical equation forphotosynthesis.

No plagiarizing ! 6th grade work! easy and 100 compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.