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| Biology | 1 |
| Botany | 1 |
| Ecological Factors | 1 |
| Ecology | 1 |
| Food | 1 |
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| American Biology Teacher | 1 |
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| Hershey, David R. | 1 |
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Peer reviewedHershey, David R. – American Biology Teacher, 1999
Advocates including plants at several trophic levels when studying food chains. Presents background information on parasitic plants, myco-heterophytes (saprophytes), and carnivorous plants. Contains 20 references. (WRM)
Descriptors: Biology, Botany, Ecological Factors, Ecology
