Graded Assignment Environmental Science | Unit 2 Test: Part 2 Free Response Name: Date: Unit 2 Test: Part 2 Free Response *** 50 points *This is a test; no resources should be used unless instructed otherwise. Answer each question using complete sentences (except when you are directed to label, identify, or fill in). When you have finished, submit this assignment to your teacher in the correct assignment submission box. 1) (20 points) Look at the model illustration of two different trophic level pyramids. Use this model illustration to answer the following questions. Pyramid A Pyramid B 1 Eagle 20 Blue Jays 1000 Caterpillars 2 Maple Trees 1 Eagle 20 Blue Jays 1000 Caterpillars 100,000 Maple Leaves a) Identify a producer, primary consumer, and secondary consumer from the model illustration. O Stride, Inc. All rights reserved. No reproduction without the written consent of Stride, Inc. Graded Assignment Environmental Science | Unit 2 Test: Part 2 Free Response b) Which model illustration is a better way to represent this land ecosystem (Pyramid A or B)? Explain your reasoning. Herbivore A (kilocalories) Omnivore B (kilocalories) a) Food ingested/day +0.84 +4.90 b) Respiration/day -0.19 -1.60 c) Heat loss/day -0.23 -1.40 -0.33 -1.25 d) Egested Waste/day e) Net Energy Gain/Loss/day (add rows (a) through (d)) f) Net Energy Gain/Loss %/day (divide (e) by (a) then multiple by 100) Complete the table above using the information provided. d) Using the graphic above, explain why this ecosystem can support 1000 caterpillars but only 20 blue jays? Explain your answer in terms of energy availability and flow – you must make direct reference to the data above and how the data connects to the 10% rule. - *Test continued on next page O Stride, Inc. All rights reserved. No reproduction without the written consent of Stride, Inc. Environmental Science | Unit 2 Test: Part 2 Free Response Graded Assignment 2) (20 points) The graphics below represent data of North American Biomes. Temperature and Moisture in Biomes Average annual precipitation tundra temperate forest tropical rain forest taiga temperate grassland savanna 2 Average temperature 4 3 O Stride, Inc. All rights reserved. No reproduction without the written consent of Stride, Inc. desert Zone Rainfall (cm) 1 25 2 75 3 25 5 4 60 50 CO 6 150 >225 1 2 3 4 Graded Assignment Environmental Science | Unit 2 Test: Part 2 Free Response a) Identify the six biomes of North America in the table below using the graphics on the previous page. Take note that the temperate grassland and savanna are being considered one biome. Zone Biome 5 6 b) Based on the data above, what characteristic differentiates the tundra and the desert? Why might the tundra be known as the 'frozen desert'? c) Based on the data above, what characteristic differentiates the grasslands and the temperate deciduous forest? What would be the most likely reason for the grasslands having grasses rather than trees as their dominant species plant? d) Biodiversity is a term that is used to describe the variety of plants and animal species in a given biome. An ecosystem that supports a large variety of species is said to be very biodiverse. What biome would you anticipate being the most biodiverse? The least? Explain your reasoning using the data provided. *Test continued on next page O Stride, Inc. All rights reserved. No reproduction without the written consent of Stride, Inc. Graded Assignment Environmental Science | Unit 2 Test: Part 2 Free Response 3) (10 points) The graphic below represents a specific nutrient cycle. Use the model below and your knowledge of nutrient cycles to answer the following questions. Plants and animals release carbon dioxide as part of cellular respiration, Plants remove carbon dioxide from the atmosphere. The burning of fossil fuels releases carbon dioxide. The cells of living things on the earth's surface contain carbon. When dead organisms break down, carbon dioxide is released into the atmosphere. Carbon dioxide dissolved in water can disperse into the atmosphere. Also, carbon dioxide can dissolve in surface water. The cells of sea life contain carbon Decomposing sea life releases carbon dioxide a) What natural resource cycle is represented in the model/graphic above? (oxygen, carbon, nitrogen, sulfur, or phosphorous) b) What are two natural ways that this natural resource enters the atmosphere? c) Identify the process that is labeled with the red star. d) How does human use of this natural resource affect this nutrient cycle? Discuss two human impacts that are disrupting this cycle. O Stride, Inc. All rights reserved. No reproduction without the written consent of Stride, Inc.