Saving Energy 在线电子书 图书标签:
发表于2024-11-25
Saving Energy 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024
For too long, people have treated Earth's resources as if they will last forever. Now we are faced with serious challenges that threaten our planet's delicate balance. The series Improving Our Environment highlights important environmental issues and reminds readers that we must act now if we are to preserve our natural resources for ourselves and future generations. In addition to describing the causes and effects of problems around the globe, each title offers helpful suggestions for improving the environment and preventing further harm to our planer's fragile resources.
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Saving Energy 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024