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Chapter topics:
- Lakes and rivers
- The water cycle
- How are lakes formed?
- Lake and river systems
- Groundwater
- The uses of lakes and rivers
- Threats to water quality
- Sewage treatment
- Test your knowledge
- Summary
A valid license for package „Opiq+ For Teacher” or „Opiq+ Home” is required to use the kit. Click the link with the package name to learn more about the package and order a license.
If you have a valid license, log in to view the chapter.
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