Photosynthesis system Photosynthesis system Photosynthesis systems are electronic scientific instruments designed for non-destructive measurement of photosynthetic rates in the field. Photosynthesis systems are commonly used in agronomic and environmental research, as well as studies of the global carbon cycle. Photosynthesis systems function by measuring gas exchange of leaves. Atmospheric carbon dioxide is taken up by leaves in the process of photosynthesis, where is used to generate sugars in a molecular pathway known as the Calvin cycle. This draw-down of induces more atmospheric to diffuse through stomata into the air spaces of the leaf. While stoma are open, water vapor can easily diffuse
What I Need to Do around" and go back to his lover, then hold her, and then tell her how sorry he is for what he did. What I Need to Do "What I Need To Do" is a song written by Tom Damphier and Bill Luther, and recorded by American country music artist Kenny Chesney. It was released in January 2000 as the fourth and final single from Chesney's 1999 album "Everywhere We Go". The song peaked at number 8 in the United States and number 13 in Canada in 2000. The song describes the narrator thinking about "what [he] need[s] to do" as