Saving Energy 在線電子書 圖書標籤:
發表於2024-11-25
Saving Energy 在線電子書 pdf 下載 txt下載 epub 下載 mobi 下載 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 在線電子書 pdf 下載 txt下載 epub 下載 mobi 下載 2024