Sample water from a variety of streams for nitrate levels before and after a spring rain. Analyze the information and explain what steps are needed to reduce nitrates in water sources.

* Constancy and Change

When people move from one country to another, cancer rates follow the patterns of the country in which they currently reside. Explain this in terms of environmental factors influence on cancer.

What nutrients are present in the foods I eat? Perform simple nutrient tests on foods to find which basic food molecules are present (proteins, fats, sugars, complex carbohydrates).

How do the nutrients in my food compare to the food my Grandmother ate? Examine food labels and nutrient information for foods eaten in one meal. Compare this to a meal that your grandmother ate when she was young. Develop a graphic organizer describing the differences you found and explain the social/economic circumstances surrounding each meal.

*Unifying Concept (NSES) represented in this activity. Unifying concepts cross curricular areas and provide students with productive and insightful ways of thinking about and integrating basic ideas that explain the natural and designed world.