From the student companion website for Environmental Science: Towards a Sustainable Future by Wright and Boorse. If they cannot decipher your handwriting, then awarding points is more difficult. This makes phosphorus a limiting nutrient in aquatic environments. Great interactive practice quizzes for all 24 chapters. For example, if a natural disaster reduced the population to a small size, there will be fewer unique genotypes present in the remaining population. The correct answer is C. Includes 15-20 questions for each of the 25 chapters in the book.
These flashcards from Quizlet cover 271 terms and include images to help explain the terms. Shy away from using examples or solutions that are specific to your local region or are uniquely your own ideas. Survivorship curves are graphs that represent the proportion of surviving individuals as a cohort ages. The offspring of these individuals will not be as genetically diverse due to the limited alleles present. The correct answer is A. The correct answer is B.
The correct answer is B. The aspen tree is often referred to as a pioneer species because of its ability to colonize new environments rapidly and maintain its longevity regardless of potential fires. The correct answer is A. Thus, if two items are requested, and a student lists six items of which the first two are incorrect, no points will be given even if the last four of the six items are correct. Includes detailed explanations for each answer. Select a chapter, click on go, and then click on Post-Lecture Quiz.
Bottom feeders are generally aquatic animals that feed along the bottom of a body of water. . A pioneer species in North American forests is a species of tree that can colonize new areas quickly and thrive. Make sure all of your work and answers are in your pink answer booklet! Don't waste valuable time writing about all the things you know on another topic that is not related to the question. This diagrams shows that 10% of the energy is conserved from one trophic level to the next. Sometimes, in an effort to fill space, students will launch into a dissertation that is not relevant to the question that was asked.
Amensalism perhaps the end result of competition where one member of the interacting pair won takes place when one organism is harmed and the other is unaffected by the relationship. In a mutualistic relationship, both organisms derive a benefit. Be sure to try these! Beavers are considered to be a classic example of ecosystem engineers. You can review these as regular flashcard, practice questions, or as a matching game. The law of conservation of matter states that matter cannot be created or destroyed, it can only change forms.
An ecosystem engineer is a type of keystone species that creates or maintains a habitat for other species. Phosphorus is held very tightly in soils, and very little is naturally available in river and streams. It is a waste of time and will not earn points. The species richness of a community is influenced by latitude, time, habitat size, and distance from other communities. A math based free-response question almost always contains a part of the question you could answer without the calculations being done. You may be prompted to describe an environmental problem in one part of a question, an economic problem in another, and an environmental benefit in a third.
If a population is drastically reduced, the genetic composition may change. Therefore you should use only commonly known examples or solutions. Avoid fabricating information as well. Includes the multiple choice section along with free response questions. In a commensalistic relationship, one organism benefits and one is not substantially harmed or helped. In nature there are always disturbing influences, so the Hardy-Weinberg Principle is meant to provide a baseline to measure against the changes that are occurring.
Although the validity of the Hardy-Weinberg Principle relies upon a set of assumptions, it remains useful in providing an ideal scenario with which real world data can be compared. The correct answer is D. This is the actual 1998 exam which was released by the College Board. Detritivores obtain nutrients by consuming decomposing organic matter, or detritus. Messy or illegible writing is very difficult to grade. Select a chapter from the menu to get started.
When asked to do calculations, show your work. Remember, answers on the rubric for the free-response section must be able to be applied to every single student across the country and around the world that takes the exam. Omnivores consume both plants and animals. Chapter quizzes for Environment: The Science Behind the Stories by Withgott and Brennan. The correct answer is C. The correct answer is E. They change into a different form, and may become hazardous to the environment or humans.