2014-12-29T08:00:00Z This classroom resource provides clear, concise scientific information in an understandable and enjoyable way about water and aquatic life. Spanning the hydrologic cycle from rain to watersheds, aquifers to springs, rivers to estuaries, ample illustrations promote understanding of important concepts and clarify major ideas.
288 pages , Macmillan , 2004-02-01 An expert in child development champions the importance of an unhurried childhood As our children are pushed harder than ever to perform so that they will one day "make the grade" in the adult world, parents are beginning to question the wisdom of scheduling childhood's basic pleasures. Across the country there have been parent rebellio...[Read More]
2011-01-15T08:00:00Z For years, predators like snow leopards and white-tipped sharks have been disappearing from the top of the food chain, largely as a result of human action. Science journalist Will Stolzenburg reveals why and how their absence upsets the delicate balance of the world's environment.
2017-05-12T08:06:54Z Presenting a global and interdisciplinary approach to plant ecology, this much-awaited new edition of the book Plants and Vegetation integrates classical themes with the latest ideas, models, and data. Keddy draws on extensive teaching experience to bring the field to life, guiding students through essential concepts with numerous real-world examples and full-colour...[Read More]
In ecology, the theory of alternative stable states (sometimes termed alternate stable states or alternative stable equilibria) predicts that ecosystems can exist under multiple "states" (sets of unique biotic and abiotic conditions). These alternative states are non-transitory and therefore considered stable over ecologically-relevant timescales. Ecosystems may transition from one stable state to...[Read More]