综合填空
根据短文和所给首字母写出所缺单词，使短文完整，意思通顺、连贯
Do you know something about tree rings (年轮)? Do you know they can tell us what the weather was l_____, sometimes even hundreds of years ago?
A tree will grow well in a climate with lots of sunshine and rainfall. And l____ sunshine or rainfall will limit (限制) the growth of a tree. We can see the change of climate by studying the tree rings. For e______, to find out the weather of ten years ago, count the rings of a tree from o______ to the inside. If the t_____ ring is far from the eleventh ring, then we are sure that it was sunny and rainy most of that year. If it is near to the eleventh ring, then the climate that year was bad.
Tree rings are i______ not only for studying the history of weather but also for studying the history of man. Long long ago there lived a lot of people at a place in New Mexico. But now you can find only s_____ there—no trees and no people. What h_______?
A scientist studied the rings of d_____ trees there. He found that the people had to leave b_____ they had cut down all trees to make fires and buildings. As all trees had gone, the people there had to move.