In the Northern Hemisphere, climate scientists observe seasonal changes in carbon dioxide concentration with the highest levels measured in May and the lowest levels measured in October. Hypothesize how photosynthesis can affect these changes. Explain your answer in three to five sentences. (Remember: 1. Leaves, in the Northern Hemisphere, appear on trees in the Spring and fall from trees in the Autumn. 2. Leaves are where photosynthesis occurs. 3. How does photosynthesis effect carbon dioxide?)(4 points) Short Answer Rubric (4 points) Points Awarded Criteria 4 The answer is very clear. The answer is fully supported by details. There may be a few errors in grammar, usage, or mechanics. Errors do not interfere with meaning. 3 The answer is mostly clear. The answer is supported by mostly relevant details. There are a few errors in grammar, usage, or mechanics. Errors do not interfere with meaning. 2 The answer is somewhat clear. Details are weak or not related. There are some errors in grammar, usage, and mechanics. Errors interfere with meaning. 1 The answer is not clear. There are few or no supporting details. There are many errors in grammar, usage, and mechanics. Errors interfere with meaning. 0 The question is not answered. Skip to navigation
In the Northern Hemisphere, the seasonal changes in carbon dioxide concentration can be affected by photosynthesis. During spring, when leaves appear on trees, photosynthesis is more active. This process involves plants taking in carbon dioxide from the atmosphere and converting it into oxygen and glucose. As a result, the concentration of carbon dioxide decreases. In autumn, when leaves fall from trees, photosynthesis slows down or stops. This leads to a decrease in the amount of carbon dioxide being absorbed by plants, causing the concentration of carbon dioxide in the atmosphere to increase. Therefore, the seasonal changes in carbon dioxide concentration can be attributed to the cycle of photosynthesis in plants.
