The Biology of Water: The River of Life DVD

United Learning

$69.00 
SKU: DC023932
Format: DVD
Grade Level:
Runtime:
Copyright: 1991

Alt Formats:
Free Resources
Marc Record

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In this program, we discover how rare fresh water is created from the vast oceans of salt water which cover the planet. By following an imaginary stream from high in the mountains back to the sea, we learn the many ways that pollution affects freshwater organisms. The results of acid rain, nutrient pollution, detergents, herbicides, and pesticides are all examined.