(20 14? Since winter, smog weather has frequently appeared in many places in China. Scientists warn that the adverse effects of smog in China on agriculture are like "nuclear"

(1) Apply vaseline on both sides of the blade A (vaseline will block the pores of the blade), and leave the blade B untreated. The only difference between leaves A and B is whether the stomata can be opened, so (2) Leaves A and B are designed as a set of control experiments, and the variable in this experiment is whether the stomata can be opened.

(2) transpiration loss. After putting geraniums in the light for a period of time, Yiran found that plastic bag A was still dry, and some small water drops appeared in plastic bag B, which came from the transpiration of plants.

(3) Photosynthesis releases oxygen, which has the function of supporting combustion. In the afternoon, bag A and bag B were opened, and a dying match quickly reached into the bag. There is no obvious phenomenon in A, and the match in B is rekindled, which shows that bag B is rich in oxygen, which is the result of plant photosynthesis.

(4) Breathing consumes oxygen and releases carbon dioxide, which can put out fires. At night, put on a plastic bag and tie the bag tightly. At dawn the next day, open bag A and bag B and quickly put in a burning match. There is no obvious phenomenon in A, and the match B goes out, indicating that the carbon dioxide in bag B is rich, which is the result of plant respiration.

(5) In order to reduce the error, students in Yiran have repeated this experiment many times. After many experiments, the experimental results are the same, so it can be concluded that sealing holes will affect the physiological functions of plants.

(6) Environmental protection measures adopted in life: going to school by bike, saving electricity, planting trees, etc.

So the answer is:

(1) control; Whether the pores can be opened;

(2) transpiration;

(3) oxygen; Photosynthesis;

(4) carbon dioxide; Breathe;

(5) reducing errors; Obturator can affect the physiological function of plants;

(6) Go to school by bike.