In this lesson our instructor talks about energy and ecosystems. First she discusses biotic and abiotic components of ecosystem. Then she talks about biogeochemical cycles, water cycle, carbon cycle, and nitrogen cycle. Lastly, she lectures on phosphorous cycle, climate change, and eutrophication. Four complete example videos round up this lesson.
An ecosystem is
all organisms and non-living components in one area (biotic and
The first law
of thermodynamics states that energy cannot be created or destroyed;
it can only be changed from one form to another.
Productivity (GPP) is the total amount of light energy converted to
Productivity (NPP) is the GPP minus the energy required for
The law of
conservation of mass dictates that mass cannot be created or
destroyed, therefore chemicals important to living organisms cycle
between parts of the ecosystem. These cycles are known as
The four most
significant biogeochemical cycles for living organisms are: the
water cycle, the carbon cycle, the nitrogen cycle and the
fuels removes carbon from the reservoirs and relocates the carbon to
the atmosphere in the form of CO2.
CO2 levels resulting from fossil fuel consumption have
contributed the increase in average global temperatures through the
Energy and Ecosystems
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
The book and CD package include three full length practice exams that are presented with all questions answered and explained. The author also presents detailed reviews of all test topics and includes multiple-choice and free-response questions with answers at the end of each topic's chapter.
This book has a great topic-by topic breakdown of the 14 must-know principles with sample questions and answers for each of the subjects. Laboratory Review includes a focused review of all 12 AP laboratory exercises. Included in this is 2 full length practice tests that stimulate the actual test along with answers and complete explanations.
This book includes a comprehensive biology test topic review, covering everything from photosynthesis to genetics to evolution. Cracking the AP Biology also includes testing strategies for the grid-in and essay section, great guidance on writing a high-scoring essay, and two full length practice exams with detailed explanations.