TY  - ADVS
AU  - Stonebarger,Bill
ED  - Hawkhill Associates
TI  - Chemical cycles in the biosphere
PY  - 2004///]
CY  - Wisconsin
PB  - Hawkhill Associates Inc.
KW  - Biochemistry
KW  - Chemicals
KW  - Physiological effect
KW  - Biosphere
KW  - Pollution
KW  - Environmental aspects
KW  - Chemical processes
N1  - Title from title screen; Videographers, Jane Denny, Michael Stonebarger ; graphics, Lin Haley, Doug Normington, Michael Stonebarger ; editors, Jane Denny, Bill Stonebarger ; music, Michael Stonebarger
N2  - Helps students develop a basic understanding of the cycling of chemicals in the earth's biosphere. Shows the good and bad effects chemicals have on our world, as well as the processes through which they produce the effects. Also includes guided questions and mastering quiz
ER  -