![Wanttosavetheearth?Plantatree!What'scausingglobal(全球的)w...]( "Wanttosavetheearth?Plantatree!What'scausingglobal(全球的)w...")
- 问题详情：Wanttosavetheearth?Plantatree!What'scausingglobal(全球的)warming?Isitman-made?Oraretemperaturessimplychangingnaturally?Whateverthecase,wecanatleasttrytoslowthingsdown.Buthow?TheWildernessProjecthasanidea.21．.Iftheearthhasmoretrees,greenhouseg...
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