When the Wolves Returned 在线电子书 图书标签:
发表于2024-11-08
When the Wolves Returned 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024
Yellowstone National Park's majestic geologic wonders and remarkable wildlife draw millions of visitors each year. But there was a time when these natural treasures were in great danger, all because after years of unrestricted hunting, one key piece of the puzzle had been eliminated--the wolf. Now, more than a decade after scientists realized the wolves' essential role and returned them to Yellowstone, the park's natural balance is gradually being restored. The informative dual-level text and spectacular full-color photographs show the wolves in the natural habitat that was almost lost without them. Readers of all ages will be inspired by the delicate natural system that is Yellowstone.
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When the Wolves Returned 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024