2012年3月26日星期一

Function of My Tree

   In our environment, more and more area are drought. So , human need more trees to keep the H2O. My tree has a lot of function, such as, photosynthesis, respiration. In my opinion , the most important function is my trss can fix the water. As everyone knows that  lack of fresh water is threatening the survival of human beings, animals and plants on the globe. My tree can take advantage of respiration in soil and water conservation. "C6H12O6+6O2+6H2o6CO2+12H2O+energy"  Protect our trees, please.

2012年3月20日星期二

Natural Phenomena (Spring Break)

     There are many Natural Phenomena in our life. Such as, tornado, typhoon, and  lightning. Durning the spring break what impressed me most were the lightning. Lightning is a natural phenomenon, and it is produced in thunderstorms when liquid and ice particles above the freezing level collide, and build up large electrical fields in the clouds. Once these electric fields become large enough, a giant "spark" occurs between clouds and the ground like static electricity, reducing the charge separation. The lightning spark can occur between clouds and air, or between the cloud and ground. Nature for me is very mysterious. In my free time, I usually explor the nature and get the answer.

 

2012年3月6日星期二

Abiotic environment

     As different latitude, the seasons change is different.  My tree grows the high latitudes, so the change of the four seasons is very apparent.  In the spring everything are weak up. The Temperature is gradually warming. My tree becomes very green. The influence of temperature on my tree is enormous. In the summer, raining made my tree faster to grow. The plants need the right amount of sunlight and rain to grow. Autumn is the season for harvest. After the flowers wither, there come clusters of fruits.  My tree can grow the fruit. During the winter, grasses die and my trees become dormant and stop functioning as a CO2 sink. In sum, the growth of plants need water, inorganic salts, and sunlight.