A new technique for the proper checking and banning of organic food items is proposed. The analysis of the nitrogen isotope ratio present in the food is found to be a perfect standard for the organic checking of the food products.

Sexual selection is the primary force affecting the evolution of the elaborate sexual displays common in animals, yet sexual selection experiments are largely absent from introductory biology laboratories. Here we describe the rationale, methodology, and results of several experiments using "Drosophila melanogaster" to demonstrate sexual selection…

Describes in detail a program utilizing the study of marine biology to motivate students. (LS)

Describes a course designed to strengthen a student's background in organic chemistry, demonstrate the interfacing of chemistry and biology, expose undergraduates to graduate research, provide familiarity with instrumentation, and provide a novel field experience. (Author/GS)

This National Oceanic and Atmospheric Administration publication lists 116 species of living and recently extinct marine mammals of the world. Included are 36 species of Order Carnivora (polar bear, sea otter, and 34 pinnipeds); 5 species of Order Sirenia; 10 of Order Mysticeti (baleen whales); and 65 species of Order Odontoceti (tooth whales).…

REFERENCES TO BIOLOGICAL EXPERIMENTS THAT EMPHASIZE THE USE OF RADIOISOTOPES AS TRACERS ARE INCLUDED IN THIS ANNOTATED BIBLIOGRAPHY. MATERIALS INCLUDED ARE CONSIDERED TO BE READILY AVAILABLE AND WERE PUBLISHED AFTER 1960. SECTION I IS COMPOSED OF SELECTED SOURCES. ENTRIES INCLUDE (1) COMPLETE CITATIONS, (2) A BRIEF ANNOTATION, AND (3) LISTS OF…

This collection of student activities for grades four through twelve presents action-oriented experiences with hardy aquatic organisms as the foundation for a laboratory-oriented science program. The format is characterized by pre-lab, post-lab, and student sections. Pre-lab topics include level, concepts, facts, suggested prerequisite skills,…

This document describes cameras, film, and methods useful for indoor or outdoor photography of aquatic and marine subjects. (SL)

This unit is designed for students in secondary school science classes. Emphasized are various aspects of the anatomy and behavior of the starfish. Included are teacher background materials, lists of needed materials, suggested activities, evaluation materials, transparency masters, and selected references. (RH)

This unit is designed to be used by students in biology classes in secondary schools. Emphasized in the unit are coastal life zones, plants and animals that live in these areas, and factors influencing the lives of the organisms. Included in the unit are evaluation materials, instructional objectives, student background information, masters for…

This publication is designed for use in standard science curricula to develop oceanologic manifestations of certain science topics. Included are teacher guides, student activities, and demonstrations designed to impart ocean understanding to high school students. When the student has completed this unit, he should be able to: (1) define an…

As tides ebb and flood, quantities of diving, dying, and dead materials are moved from place to place. Many of these materials are stranded at the littoral fringe as the tide changes from flood to ebb. This area of stranded material, sometimes a belt as much as a meter wide, is appropriately known as the strand line. In these activities, students…

Examines American and British policies concerning DNA research and gene transplantation. (CP)