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Monastersky, Richard – Science News, 1992
Researchers who study the fossil record are seeking to determine whether the impact made by a comet or meteor really did decimate up to half of the life on this planet at the end of the Cretaceous period. Questions whether the extinction of plant and animal life was abrupt, started before the impact, or was a gradual change. (KR)
Descriptors: Archaeology, Evolution, Paleontology, Plants (Botany)
Govindjee; Coleman, William J. – Scientific American, 1990
Discusses the biochemical mechanisms related to photosynthesis. Describes a water-oxidizing clock generating a molecule of oxygen with every four ticks. Lists four references. (YP)
Descriptors: Biochemistry, Botany, Light, Metabolism
Peer reviewed Peer reviewed
Darley, W. Marshall – American Biology Teacher, 1990
Major differences between plants and animals are presented. Discussed are autotrophs and heterotrophs, plant growth and development, gas exchange, the evolution of plants, ecosystem components, the alleged inferiority of plants, and fungi. (CW)
Descriptors: Animals, Biology, Classification, College Science
Dai, Mei-Fun Wang – 1995
The study reported in this paper intended to trace what Chinese children think about life and identify their naive theories. Fifty-eight 5-year-old children in Taiwan from 39 kindergartens were interviewed using a semi-structured instrument. Results indicate that preschool children have preconceptions about the concept of life even before entering…
Descriptors: Animals, Cultural Influences, Curriculum Development, Foreign Countries
Onianwa, P. C. – International Journal of Environmental Education and Information, 1993
Reviews research studies related to the monitoring of trace heavy metals in environmental samples such as plants, water, soils, and other natural resources in the city of Ibadan, Nigeria. Research results indicate a significant increase in toxic heavy metal levels has occurred, implying the need for environmental education. (Contains 31…
Descriptors: Developing Nations, Elementary Secondary Education, Environmental Education, Environmental Research
Peer reviewed Peer reviewed
Harvey, Margarette R. – Journal of Environmental Education, 1990
Evaluated is the impact of the landscape upon children in 21 schools in England. Past and present experiences of 8- to 11-year-old children were measured. Results indicate that both past and present experiences make a small but significant contribution to the children's development of botanical knowledge and environmental dispositions. (Author/CW)
Descriptors: Conservation (Environment), Elementary Education, Elementary School Science, Environmental Education
Peer reviewed Peer reviewed
Hershey, David R. – Bioscience, 1992
Reviews rationale, purposes, challenges, and relevance of hands-on, plant biology curricula that have been developed in response to the limited use of plants in biology education. Discusses methods to maintain both instructional rigor and student interest in the following topics: cut flowers, container-growing media, fertilizers, hydroponics,…
Descriptors: Biology, Curriculum Development, Elementary School Science, Elementary Secondary Education