In the past, people were accustomed to writing in vertical lines from right to left. The traditional couplets followed this rule, but things have changed. Sometimes people don't follow the rules, and they even make mistakes. Here is the way to read Spring Festival Couplets: First, look at the horizontal scroll. If the four characters are written from left to right, the upper scroll will be on the left and the lower scroll on the right.
The input of water cannot estimate photosynthetic rate, since it is also used in transpiration. The parameter that you chose to measure depends on your resources and the accuracy required of your estimates. There are instruments that measure the input of CO2 and output of H2O, called Photosynthesis Measurement Systems.
The rate of photosynthesis will be measured by counting the number of oxygen bubbles produced by the Elodea plants in each 2-minute trail. After completing a number of experiments, students and teachers will discuss their findings in relation to macro-level factors that affect ecosystem health and climate change.he cylinder will be filled with normal tap water or spring water, and the stem of the elodea should be submerged 1-2 inches in the water. e. Students will place their light source 10 cm. from the body of the elodea sprig and will count the number of oxygen bubbles released from the stem over a 2 minute period.