Environmental Science > EXAM > Environmental Science Milestone 2,100% CORRECT (All)

Environmental Science Milestone 2,100% CORRECT

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Which statement about the nitrogen fixation process is FALSE? • When animals die, nitrogen is reabsorbed into the atmosphere. • Bacteria take nitrogen from the atmosphere. • Animals... take in nitrogen by eating plants such as clover, alfalfa and soybeans. • Atmospheric nitrogen is not usable for life forms. 2 Choose the statement that is NOT true about conditions within the given biome. • Temperate forest biomes have four seasons. • Taiga biomes exist only in the northern hemisphere. • Tropical rainforests are located near the equator and are hot and humid. • Grassland biomes do not have enough precipitation to support many trees. 3 Select the example that describes a native species. • Lemurs evolved with natural predators on the island of Madagascar. • English ivy was imported to North America to help provide ground cover. • Scotch broom quickly dominated the landscape after it escaped from a garden. • Citrus trees in Florida originated in sub-tropical Southeast Asia. 4 Select the statement that is indicative of valuing species for their intrinsic value. • Factory farming should be abolished because it condemns chickens to short, miserable lives. • Wilderness areas are places that provide opportunities for reflection and enjoyment. • These wetlands must be protected because they provide flood control. • Cotton is an important crop because it can be made into fibers for clothing. 5 Select the food chain that is in the correct order, starting at the first trophic level. • Flower, Toadstool, Grasshopper, Mouse • Toadstool, Flower, Grasshopper, Mouse • Toadstool, Mouse, Grasshopper, Flower • Flower, Grasshopper, Mouse, Toadstool 6 Large rocks at the back of a beach cause the wind speed to slow. Windblown sand begins to drop and build small sand piles, which create another windbreak and more sand is deposited. Gradually, salt-tolerant grasses will begin to stabilize the sand dune with a vast network of root systems. The process described is called __________. • secondary succession • primary succession • community ecology • ecosystems ecology 7 Which of the following is a renewable resource? • Natural gas • Coal • Gemstones • Ethanol 8 Choose the example of a producer in the food chain. • A grasshopper that eats grass • Fungi that develop on a fallen log • Tomatoes that grow in a garden • A gull that eats a grasshopper 9 Select the statement that refers to an exponential population growth model. • This model considers carrying capacity when examining population growth. • This graph is a more realistic model of population growth. • This model considers a limited amount of natural resources when examining population growth. • The slope of the graph in this model is steepest near the top. 10 Which list correctly orders the examples of organism, population, community and ecosystem? • Prairie dog, family of prairie dogs, animals on the prairie, prairie • Seahorse, sponges, group of turtles, coral reef • Rabbit, nest of rabbits, wolf pack, arctic tundra • Den of desert foxes, kangaroo rats, cacti and sand, desert 11 Environmental scientists cite several challenges to protecting endangered species. Which of the following is NOT a difficulty faced by those working to protect an endangered species? • It is difficult to enforce protection policies in some environments. • There is no legislation in the United States to protect species identified as endangered. • People aren’t that interested in protecting animals they do not consider valuable. • Identifying danger for a species may come too late to reverse the danger. 12 Choose the statement about deforestation that is NOT true. • The water cycle is affected. • Climate is unaffected. • Soil erosion degrades the land. • Impacts are local, regional and global. 13 Which of the following is a strategy associated with conservation biology? • Designating a nature reserve to protect an endangered wildcat species. • Re-establishing a native species of pine tree in an area used previously by loggers. • Exploring the interdependence of species within ecosystems on a global scale. • Monitoring and evaluating groundwater quality in a formerly contaminated site. 14 Which of the following is an example of competition? • Cacti with deeper root systems consume more water than other nearby plants. • An owl captures and eats a field mouse. • Leeches attach themselves to a swimmer’s legs. • Bacteria in a human’s intestine eat food that humans cannot digest. 15 Which of the following is NOT an example of overexploitation? • Each time salmon are harvested from a fish farm, new salmon are brought in to replace them. • Ginseng is slow-growing, produces few seeds and is highly sought after for its medicinal properties. • The passenger pigeon population in America was in the billions before they became extinct. • 25 million bison once roamed the American landscape; by 1880, only 1,091 remained. 16 “I know the difference between weather and climate,” Josh said softly, “but I’m forgetting the ways physical locations affect climate.” Aliesha studied her notes. “You mean like it getting colder as you climb a mountain?” “Yes!” Josh shouted. Aliesha winced and the librarian immediately shushed them with a stern finger to his lips. “I didn’t mean to get excited,” Josh whispered. “I’m just nervous about this test.” “Say you’re in a boat headed toward the equator,” Aliesha prodded. “What climate would you expect to find there?” To correctly answer the question, Josh would say which of the following? • "Increased cloud cover would cause high humidity and rain." • "There would be little rain near the coastline." • "Days would be hot and nights would be cool." • "The temperature would be warmer near the equator." 17 Choose the true statement about the possible impact of an invasive species. • Biodiversity is improved. • The health of an ecosystem is reduced. • Most native species adapt to coexist with invasive species. • Natural predators contain its growth. 18 Which statement accurately describes the "tundra" biome? • A layer of permafrost and a short growing season can be found here. • This biome contains most of the human population. • This biome contains many trees that go dormant in winter. • Evergreen forests and long cold winters are found here. 19 According to the graph, on what date was carrying capacity for the rabbit population reached? • June 1 • April 1 • August 1 • October 1 20 Choose the statement that is NOT true about energy and trophic levels. • Primary productivity is dependent on sunlight, moisture and temperature. • Secondary productivity is the rate at which consumers convert organic material into biomass. • Photosynthesis captures more than 10% of sunlight that reaches Earth. • Six is considered to be the maximum number of trophic levels in any ecosystem. 21 Which of the following statements about photosynthesis and carbon cycling is true? • Climate is involved in carbon recycling. • All carbon on Earth is contained in living organisms. • Cellular respiration is the release of sugars as energy. • Carbon cycling occurs in both long-term and short-term cycles. 22 Population ecologists study which of the following characteristics? • Temperature regulation, nutrition and metabolism of organisms. • Number, density, age, and sex of organisms. • Atmosphere, rocks, water and living organisms. • Composition, distribution and interaction of species in a given area. 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