This 23-minute videotape for grades 5-8, presents the myriad of animal life that exists on the planet. Students can view and perform experiments and investigations that help explain animal traits and habits. The ancestors of reptiles date back to the dinosaurs. After the dinosaurs died out, it was one of the best-adapted species that survived and…

This 23-minute videotape for grades 5-8, presents the myriad of animal life that exists on the planet. Students can view and perform experiments and investigations that help explain animal traits and habits. Students learn about the incredible variety of mammals and how they survive in different environments while discovering which characteristics…

Briefly reviews the relevant literature on human prenatal effects, describes some of the possible designs for such studies; and discusses some of the methodological problem areas: sample choice, measurement of prenatal variables, monitoring of labor and delivery, and neonatal assessment. (CS)

Discusses human nature and behavior and indicates that, with the rate of ecosocial change accelerating, understanding the nature of man has become a precondition to the enhancement of human individuality and to the very survival of our species. (Author/JR)

Discusses seals in terms of their classification, ecological influences, their pelage, moult and thermoregulation, respiratory and vascular systems, predation and mortality. (JR)

Results of psychological experiments usinganimals are presented. Use of the animal-human analogy to generalize these findings to humans is discussed. Ethological studies are interpreted in light of the total environment and situation involved. The completeness of the ethological model compared to the animal-experimental model is discussed. (LS)

Monkeys with a severe visual acuity deficit were reared in social isolation to determine factors related to sterotyped movements, which have been observed in visually handicapped persons. (Author/MC)

Reviews theories of language origin with particular reference to Morris Swadesh's The Origin and Diversification of Language'', Chicago: Aldine-Atherton, 1971. (RS)

Article reviews evidence on the effects of contrast and matching, that these effects are related, and that both effects are reactions to the same independent variable. (Author/RK)

Describes the variety of formal and informal educational programs being developed by zoos and aquariums in the United States and suggests methods of increasing the educational utility of these facilities. (AL)

Substances that deliver chemical messages between same/different species are called semiochemicals. Surveyed are three types of semiochemicals (pheromones, allomones, and kairomones), types of organisms involved, and specific chemicals used to carry the various kinds of messages. (JN)

Assesses dimensions of the threatened-species problem (by contrast with the way it has been handled in the past) and suggests some directions for urgent research if the problem is to be confronted in its proper scope and scale. Among topics addressed are the biological, genetic, and ecological attributes of species. (JN)