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.
Investigation of the effects of environmental factors on the. rate of photosynthesis. The rate of photosynthesis of a photosynthetic plant is. affected by factors such as light quality, light intensity, carbon. dioxide concentration and temperature. A convenient way of investigating the effects of these factors. on the rate of photosynthesis is to measure the volume of. oxygen given off by a plant in a given time.