| 摘 要： | Do you know something about tree rings? Do you know they can tell us what the weather was like, sometimes they can show us an exact record of the weather even hundreds of years ago. A tree will grow well in a climate with lots of sunlight and rainfall. It is also expected that little sunlight or rainfall will limit the growth of a tree. The change from a favorable to an unfavorable climate can be seen by reading the tree ringsin a tree trunk.To find out the w eather of tenyears ago,countthe r…
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