4. Water, food production systems and society

4.1 Introduction  to water systems

Significant ideas: The hydrological cycle is a system of water flows and storage that may be disrupted by human activity The ocean circulation system (ocean conveyor belt) influences the climate and global distribution of water (matter and energy)

Resources:

Power points	Case Studies	Activities	Useful Links
T 4.1 Introduction to water systems The Aral Sea disaster	Supporting material The Hydrological Cycle The Aral Sea El Nino	The Hydrological Cycle worksheet Self-assessment questions	NASA | Earth's Water Cycle The Golf Stream -video ESS2C - The Role of Water in Earth's Surface Processes- Bozeman Science

4.2 Access to freshwater

Significant ideas: The supplies of freshwater resources are inequitably available and unevenly distributed, which can lead to conflict and concerns over water security Freshwater resources can be sustainability managed using a variety of different approaches

Resources:

Power points	Case Studies	Activities	Useful Links
T 4.2 Access to freshwater	The Geopolitics of Israel's water shortage	Investigation of freshwater withdrawal rates by 30 countries	Effect of Human Activity on Groundwater article Everyone, Everywhere 2030: Grace’s story | WaterAid Colorado River

4.3 Aquatic food production systems

Significant ideas: Aquatic systems provide a source of food production. Unsustainable use of aquatic ecosystems can lead to environmental degradation and collapse of wild fisheries. Aquaculture provides potential for increased food production

Resources:

Power points	Case Studies	Activities	Useful Links
T 4.3 Aquatic food production systems	Controversial Aquatic Harvesting Shrimp aquaculture in Thailand Aquaculture in Thailand Should you stop eating fish? Two Fishery management strategies		The Tragedy of the Commons Human Impacts on Antarctica and Threats to the Environment - Fishing

4.4 Water pollution

Significant ideas: Water pollution, both groundwater and surface water, is a major global problem, the effects of which influence human and other biological systems.

Resources:

Power points	Case Studies	Activities	Useful Links
T 4.4 Water pollution	Why We Need to Stop Plastic Pollution in Our Oceans FOR GOOD | Oceana	Water pollution Design Using common Duckweed to measure Water quality Using Common Duckweed to measure eutrophication [ Lab report template]	Water Pollution Guide Biotic Index/video Water Pollution-Bozeman Science Water Quality Monitoring: BOD