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Energy flow

Chapter 3 questions

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Environmental Science
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Biology
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Oxide
Phosphorus
Photosynthesis
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Energy flow
Common Kestrel
Environment

AP Environmental Science Unit 2 Test Ch. 3 & 4 Do NOT write on the test 49) Which statement describes the result of the second law of thermodynamics? A. In any isolated system entropy tends to increase spontaneously. B. Heat energy always flows spontaneously from hot to cold. C. Energy can not be created or destroyed. D. Energy input always equals energy output. 50) The energy available to the tertiary consumers (top carnivores) in a particular ecosystem is 10 kJ m?2 y?1. How much energy (in kJ m?2 y?1 ) is likely to be passed on by the producers to the primary consumers? A. 1 B. 10 C. 100 D. 1000 E. 10,000 51) How is the net productivity of the producers in an ecosystem defined? A. Energy fixed by biomass per unit time plus respiratory losses

Principles of Ecology

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Biology
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Biogeochemical cycle
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Soil biology
metabolism
Autotroph
Food web
Natural environment
Nitrogen cycle
Carbon Cycle
Energy flow
Environment

Principles of Ecology Organisms and Their Environment What is Ecology? Ecology: the study of interactions that take place between organisms and their environment The Biosphere Biosphere: the part of Earth that supports life The biosphere includes the top portion of Earth?s crust, all the waters that cover Earth?s surface, and the atmosphere that surrounds Earth. The biosphere is made up of different environments that are home to different kinds of organisms. Ecosystem: all the living organisms living in an area and the nonliving features of their environment Biotic factors: living organisms in an ecosystem (ex. bison, grass, birds, insects) Abiotic factors: nonliving features of an ecosystem (ex. water, temperature, sunlight, soil, air) Levels of Organization

Bio112 April 29th

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Biology
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Biogeochemical cycle
Biogeography
Fisheries
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Energy flow
Primary production
Trophic level
Carbon Cycle
Nitrogen cycle
Environment
Bio 112

Bio 112 April 29th, 2013 More on Ecosystems Food webs -Is a branching food chain with complex trophic interactions -Including decomposes (detritevors) Energy Flow through Ecosystems -from one trophic level to the next. Primary production - are photoautotrophs, capturing energy from the sun. Energy flows from these guys through all other levels. Of course some energy will be lost at each level. -light energy converted to chemical energy by autorophs during a given time period. -Gross primary production is the total primary production. -Net primary production is GPP minus energy used by producers (respiration)-only this is available to consumers. NPP is more important then GPP. Secondary production

Chapter 3 section 3 Powerpoint

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Biology
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Ecology
Systems ecology
Aquatic ecology
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Ecological pyramid
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Energy flow
Nutrient cycle
Food chain
Detritivore
Environment

Lesson Overview 3.3 Energy Flow in Ecosystems Lesson Overview Energy Flow in Ecosystems THINK ABOUT IT What happens to energy stored in body tissues when one organism eats another? Energy moves from the ?eaten? to the ?eater.? Where it goes from there depends on who eats whom! Lesson Overview Energy Flow in Ecosystems Food Chains and Food Webs How does energy flow through ecosystems? Energy flows through an ecosystem in a one-way stream, from primary producers to various consumers. Lesson Overview Energy Flow in Ecosystems Food Chains A food chain is a series of steps in which organisms transfer energy by eating and being eaten. Food chains can vary in length. An example from the Everglades is shown. Lesson Overview Energy Flow in Ecosystems Food Chains

Ecology Chapter 3 Worksheet Key

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Biology
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Food web
Trophic level
Ecological pyramid
Consumer
Autotroph
Energy flow
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Predation
ecosystem
Plankton
Environment

Bio I Unit 7: Ecology Name KEY 3.1 What Is Ecology? Studying Our Living Planet 1. What is ecology? It is the scientific study of interactions among organisms and between organism and their environment. 2. What does the biosphere contain? It contains all the organisms and physical environments of the Earth. 3. How are human economics and ecology linked? Economics has to do with human ?houses? and interactions based on money and trade. Ecological interactions have to do with nature?s ?houses? and are based on energy and nutrients. Humans depend on ecological processes to provide nutrients that can be bought or traded. 4. Label each level of organization on the diagram.
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