Level 3 Biology Study Guide covers all seven NCEA Level 3 Biology Achievement Standards: the three externally assessed Standards 3.3, 3.5 and 3.6 the four internally assessed Standards 3.1, 3.2, 3.4 and 3.7. These Standards are based on The New Zealand Curriculum. With full explanations of concepts, numerous examples, appropriate questions and a full set of answers, this Study Guide provides comprehensive coverage of Biology at Level 3.

Recently, environmental scientists have been required to perform a new type of assessment-ecological risk assessment. This is the first book that explains how to perform ecological risk assessments and gives assessors access to the full range of useful data, models, and conceptual approaches they need to perform an accurate assessment. It explains how ecological risk assessment relates to more familiar types of assessments. It also shows how to organize and conduct an ecological risk assessment, including defining the source, selecting endpoints, describing the relevant features of the receiving environment, estimating exposure, estimating effects, characterizing the risks, and interacting with the risk manager. Specific technical topics include finding and selecting toxicity data; statistical and mathematical models of effects on organisms, populations, and ecosystems; estimation of chemical fate parameters; modeling of chemical transport and fate; estimation of chemical uptake by organisms; and estimation, propagation, and presentation of uncertainty. Ecological Risk Assessment also covers conventional risk assessments, risk assessments for existing contamination, large scale problems, exotic organisms, and risk assessments based on environmental monitoring. Environmental assessors at regulatory agencies, consulting firms, industry, and government labs need this book for its approaches and methods for ecological risk assessment. Professors in ecology and other environmental sciences will find the book's practical preparation useful for classroom instruction. Environmental toxicologists and chemists will appreciate the discussion of the utility for risk assessment of particular toxicity tests and chemical determinations.

Level 3 Chemistry Learning Workbook covers all seven NCEA Level 3 Achievement Standards: the three externally assessed Achievement Standards - 91390 (Chemistry 3.4), 91391 (Chemistry 3.5) and 91392 (Chemistry 3.6); the four internally assessed Chemistry Standards - 91387 (Chemistry 3.1), 91388 (Chemistry 3.2), 91389 (Chemistry 3.3) and 91393 (Chemistry 3.7). All key content and skills are covered for each Achievement standard. Activities provide class and homework material, as well as offering preparation for the internal assessments throughout the year and end-of-year external exam assessments.

This new edition covers the Level 1 Biology and Science (Living World) Achievement Standards (B1.1 to B1.5 and S1.9 to S1.12) being implemented in 2011. It features theory, illustrations, examples and activities for student practice. Answers are given in the back of the book.