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.

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