The Correlation. Correlation is a measue of how close the line fits the points that you found in your experiment. Anyone can say whether they think the line is a good fit or not, but to measure it exactly, we use the correlation coefficient: R2.
As the seasons change and the amount of sunlight decreases, less chlorophyll is produced, and the leaves appear less green. Chlorophyll is broken down into simpler compounds at a constant rate, so green leaf color will gradually fade as chlorophyll production slows or stops.
Tags: Before we learn why leaves change color in autumn, let's talk about what leaves do during the rest of the year. Each leaf on a tree is like a tiny solar panel, gathering sunlight the tree uses to make food. Sunlight helps turn water and carbon dioxide into oxygen and glucose, a sugar that the tree uses for food (energy) to grow.