Teach science that your students really care about! why underarms, feet, and breath sometimes stink how to decide which personal hygiene products to use how a machine measures bad breath how fragrances cover up odors whether odor-control shoe inserts really work how search and rescue dogs track odors why NASA uses certified "smellers" and much more! Features of What's That Smell?: resource for teachers of grades 7-12 for use in general science, chemistry, biology, health, and physiology classes teacher background and instructor notes student background readings and informative articles hands-on investigations connections to National Science Education Standards for each experiment
Innovative investigations like these will empower middle and high school students to explore the states of matter and changes of state-using inexpensive toys and common household items like balloons, paper bags, Silly Putty, facial tissues, and plastic Easter eggs. Classroom-tested and proven effective, these activities draw students in with toys, gadgetry, fun-to-do experiments, and observations of scientific phenomena in everyday events. Students will see solid rock candy form as a sugar solution evaporates; inflate a balloon using dry ice; and use the BedBugs game to learn about the behavior of solids, liquids, and gases. You'll find 24 motivating, reproducible projects in all-ready to use and clearly referenced to the National Science Education Standards, with comprehensive materials lists, procedures, content review, and extension activities included. Teaching Science with TOYS is an activity-based, discovery-oriented approach developed by National Science Foundation-funded teacher training programs at Miami University of Ohio. The programs promote toys and household items as ideal science materials because they're already a user-friendly, everyday part of a young person's world.
The new edition of Seeds contains new information on many topics discussed in the first edition, such as fruit/seed heteromorphism, breaking of physical dormancy and effects of inbreeding depression on germination. New topics have been added to each chapter, including dichotomous keys to types of seeds and kinds of dormancy; a hierarchical dormancy classification system; role of seed banks in restoration of plant communities; and seed germination in relation to parental effects, pollen competition, local adaption, climate change and karrikinolide in smoke from burning plants. The database for the world biogeography of seed dormancy has been expanded from 3,580 to about 13,600 species. New insights are presented on seed dormancy and germination ecology of species with specialized life cycles or habitat requirements such as orchids, parasitic, aquatics and halophytes. Information from various fields of science has been combined with seed dormancy data to increase our understanding of the evolutionary/phylogenetic origins and relationships of the various kinds of seed dormancy (and nondormancy) and the conditions under which each may have evolved. This comprehensive synthesis of information on the ecology, biogeography and evolution of seeds provides a thorough overview of whole-seed biology that will facilitate and help focus research efforts. Most wide-ranging and thorough account of whole-seed dormancy available Contains information on dormancy and germination of more than 14,000 species from all the continents – even the two angiosperm species native to the Antarctica continent Includes a taxonomic index so researchers can quickly find information on their study organism(s) and Provides a dichotomous key for the kinds of seed dormancy Topics range from fossil evidence of seed dormancy to molecular biology of seed dormancy Much attention is given to the evolution of kinds of seed dormancy Includes chapters on the basics of how to do seed dormancy studies; on special groups of plants, for example orchids, parasites, aquatics, halophytes; and one chapter devoted to soil seed banks Contains a revised, up-dated classification scheme of seed dormancy, including a formula for each kind of dormancy Detailed attention is given to physiological dormancy, the most common kind of dormancy on earth
A major task of our time is to ensure adequate food supplies for the world's current population (now nearing 7 billion) in a sustainable way while protecting the vital functions and biological diversity of the global environment. The task of providing for a growing population is likely to be even more difficult in view of actual and potential changes in climatic conditions due to global warming, and as the population continues to grow. Current projections suggest that the world's temperatures will rise 1.8-4.0 by 2100 and population may reach 8 billion by the year 2025 and some 9 billion by mid-century, after which it may stabilize. This book addresses these critical issues by presenting the science needed not only to understand climate change effects on crops but also to adapt current agricultural systems, particularly in regard to genetics, to the changing conditions. Crop Adaptation to Climate Change covers a spectrum of issues related to both crops and climatic conditions. The first two sections provide a foundation on the factors involved in climate stress, assessing current climate change by region and covering crop physiological responses to these changes. The third and final section contains chapters focused on specific crops and the current research to improve their genetic adaptation to climate change. Written by an international team of authors, Crop Adaptation to Climate Change is a timely look at the potentially serious consequences of climate change for our global food supply, and is an essential resource for academics, researchers and professionals in the fields of crop science, agronomy, plant physiology and molecular biology; crop consultants and breeders; as well as climate and food scientists.
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