Lesson 1: The stakes of exploiting a fishery resource page 62

Problem: What are the consequences of exploiting a resource from the sea?

1) Graph 5 page 63.

The quotas have been respected since 2008 as the mass of tuna has increased.

SUMMARY: To meet its food needs, humans fish certain species of fish, which are considered fishery resources. Among these resources, the bluefin tuna, for example, has become an increasingly rare species.

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Lesson 2: Freshwater, an unevenly available resource on Earth page 64

Problem: Is access to freshwater, a vital resource, the same for everyone?

1) I compare the daily water usage of a Burkinabé and a French person: A French person uses 10X more water than a Burkinabé!

2) What is the recommendation from the WHO? The WHO recommends 50L/day/person.

3) Graph 4 page 65.

SUMMARY: To satisfy its food needs, humans fish certain species of fish, which are considered fishery resources. Among these resources, the bluefin tuna, for example, has become an increasingly rare species.

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Lesson 3: Water resources modified by human activities page 66

Problem: How does agriculture alter water resources and how can its effects be limited?

1) QUANTITY of available water: There are two types of irrigation that involve withdrawing water from an aquifer: Sprinkling, which leads to significant water loss through evaporation and Drip irrigation.

2) QUALITY of water: Modified by pesticides.

3) Doc 5 page 67

SUMMARY: Freshwater is sometimes misused through various behaviors and certain irrigation techniques for crops. There are solutions available to limit this waste, whether on an individual or collective scale.

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Lesson 4: Cleaning polluted water from human activities page 68

1) Description of a wastewater treatment plant: photocopy + video (https://urlz.fr/evMz)

SUMMARY: Freshwater is sometimes polluted by the waste from homes, industry, and unregulated agriculture. Wastewater treatment plants allow for partial decontamination of this water before it is released into water bodies. There are agricultural practices that use little or no pesticides which help to limit this pollution that is harmful to health.