Our impact on earth
Pennsylvania Standards. Our impact on earth. PA.4. Environment and Ecology.
Study GuideOur impact on earth Worksheet/Answer keysOur impact on earth Worksheet/Answer keysOur impact on earth Worksheet/Answer keysOur impact on earth Vocabulary/Answer keysOur impact on earth
The resources above correspond to the standards listed below:
PA.4. Environment and Ecology
4.2. Watersheds and Wetlands
4.2.6.C. Identify natural and human-made factors that affect water quality.
4.5. Humans and the Environment
4.5.6.D. Explain the costs and benefits of recycling in controlling resource use.
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