Each of the following terms represents a type of economic value we place on the services we get from an ecosystem except one. Which one is NOT an economic value? O O 0 O Provisioning Indirect Bequest Existence Direct

This conceptual model to the right shows the flow of energy through a spring ecosystem in Silver Springs, Florida from Figure 46.8 in your textbook. 7a. Which value/number on this diagram represents gross primary productivity (GPP)? Express using the units kcal/m?/yr. Sunlight 1,700,000 kcalim?lyr Primary producers 13,187 20,810 7,618 4,250 Primary consumers 7b. Which value/number represents net primary productivity (NPP)? Express using the units kcal/m?/yr. 2,265 3,368 1,103 720 Secondary consumers 272 383 111 90 7c. What accounts for the difference in GPP and NPP? Tertiary consumers 16 21 5 Decomposers 7d. What is the efficiency of energy transfer between the primary producers and the primary consumers? Is this more or less efficient than the transfer between a 5,060 5,060 Total heat and respiration 20,810 secondary consumer and tertiary consumer? Explain. respiration + heat to decomposers

This conceptual model to the right shows the flow of energy through a spring ecosystem in Silver Springs, Florida from Figure 46.8 in your textbook. 7a. Which value/number on this diagram represents gross primary productivity (GPP)? Express using the units kcal/m?/yr. Sunlight 1,700,000 kcal/m?lyr Primary producers 13,187 20,810 7,618 4,250 Primary consumers 7b. Which value/number represents net primary productivity (NPP)? Express using the units kcal/m²/yr. 2,265 3,368 1,103 720 Secondary consumers 272 383 111 90 7c. What accounts for the difference in GPP and NPP? Tertiary consumers 16 21 Decomposers 7d. What is the efficiency of energy transfer between the primary producers and the primary consumers? Is this more or less efficient than the transfer between a secondary consumer and tertiary consumer? Explain. 5,060 5,060 Total heat and respiration 20,810 respiration + heat to decomposers

Ecological footprint is the product of three factors: • population size, ● intensity of resource extraction, ● intensity of waste production. Each of these factors puts strain on our food systems. Search for a strategy human populations or individuals can make to reduce one of the three factors that contribute to our ecological footprint. Practice good Initiative skills as you consider strategies that could be specific to a particular part of the world. How would this help our food systems to be more effective at producing quality food?

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https://coloradosun.com/2022/02/06/colorado-soil-dry-climate-change/ Did the author support his/her/their thesis with evidence? Do you agree/disagree with the author’s position?  Why or Why not? What did you learn from this article? What connections can you make to this Environmental Sociology course?

Which of the following statements is correct? For this question 1 or more statements may be correct. If you select an incorrect statement you will lose points. When it comes to measuring the productivity of farms over the years USDA does not prefer looking at the crop yield per acre and the agricultural value-added per worker Productivity measures changes in the efficiency with which inputs are transformed into outputs The 3 special conditions of agriculture mentioned in the lectures are: biological, physical and market conditions Asset fixity is a problem because it is difficult to purchase the required capital equipment for farms Functional foods, are Foods designed to have only basic nutritional functions.

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Why the management of natural resources requires a long term perspective?

Only about 10 percent of the energy from each level of an energy pyramid is available to the trophic level above it. (The rest is used to power life processes or is lost as heat .) If the primary producers have ,000 units of stored energy , how much energy would you expect to be transfered to first-level , second level , and third -level consumers ? Fill in the boxes with your answers.