Describes the complex communities of animal and plant life found in freshwater and marine ecosystems; presents a visit with a marine biologist, discussing the oyster population of the Chesapeake Bay; and includes a hands-on experiment on the effects of pollution on lakes and ponds.
hid | mid | miid | nid | wid | location_code | location | barcode | callnum | dewey | created | updated |
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3186699 | 6617934 | 1570 | 324077 | 403545 | 22 | 283 | T 2219042 | DVD 577.6 ALL | 577.6 | 1640729255 | 1640729255 |