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ECOLOGY_ENVIRONMENT BIOLOGY Simplifies- Complete Exam Pack, Diagrams (A-Level / IB Biology Revision Notes)

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Provides in-depth and comprehensive information on Ecology & Environment Biology for Higer Secondary Graduation Student of Life Sciences & Medical preparing for semester and competitive Tests. Colorful graphs, figures and flow-charts provide complete review of Ecosystems, habitat, niche, biosphere, biome, population, community and species. Photographs, key point, notes on Ecological Components as biotic and abiotic components, autotrophs, consumers, decomposers, detrivores. Quick, Easy study prior to exams for top grades; shares knowledge on food chains, food web, trophic levels, ecological pyramid- grazing as well as detritus food chains with 10% Law, Biomass, Productivity, Standing Crop. Essential for all Science Student to understand Ecological Interaction like mutualism, commensalism, parasitism, predation, competition, amensalism, symbiosis. Also covers Population Ecology-- Natality, Mortality, Immigration, Emigration, Population Density, Carrying Capacity, Exponential Growth, Logistic Growth, Age Pyramids. Ecological Succession, Biogeochemical Cycles, Biodiversity Conservation, Environmental Issues, Conservation form an outstanding revision for concepts on Nature Study.

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UNIT 5 · BIOLOGY




Ecology & Environmental Biology
Ecosystems · Food Chains & Webs · Biogeochemical Cycles · Climate Change




Prepared for Class Presentation

, Learning Objectives


Define an ecosystem and identify its biotic and abiotic components.



Explain how energy and matter move through food chains and food webs.



Describe the carbon and nitrogen cycles and why they matter to life on Earth.



Explain the causes and consequences of climate change, and how human activity accelerates it.



Apply these concepts to real-world case studies and exam-style questions.



Ecology & Environmental Biology 2

, PART 1



Ecosystems
Where living things meet their environment




Ecosystems 3

, ECOSYSTEMS


What Is an Ecosystem?

An ecosystem is a community of living organisms (biotic) interacting with
each other and with the non-living parts of their environment (abiotic),
functioning together as a system.



Biotic components: plants, animals, fungi, microbes


Abiotic components: sunlight, water, soil, temperature, air


Ecosystems can be as small as a pond or as large as a rainforest
What Is an Ecosystem?
Energy and nutrients constantly cycle between organisms and environment




Ecosystems 4

Connected book
 image
Peter Cotgreave, Irwin Forseth Introductory Ecology
Publisher: 2009 ISBN: 9781444311341 Edition: Unknown

Document information

School year
5
Uploaded on
August 3, 2026
Number of pages
44
Written in
2026/2027
Type
Presentation
Person
Unknown
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