Fornite Skin 2020

Carbon dioxide equivalent (CO₂e) is used to compare contributions to climate change of various greenhouse gases. A study at a farm calculated the carbon dioxide equivalent for different production stages for beef and chicken production. Which of the following statements is best supported by the data in the graph?

c. Raising beef contributes more to greenhouse gases than raising chickens, primarily due to methane released from fermentation in cows' digestive tracts. ✅

The consumption of mosquitoes by bats and flood control by tropical forests are examples of:

Ecosystem services ✅

The underlying subsoil of this biome is permafrost, which prevents both water drainage and deep-rooted plants from growing. Additionally, there is very little precipitation per year. This biome is best described as:

Tundra.

Cycads are gymnosperms that were diverse and abundant during the Mesozoic era. Extant species share many traits with ancient forms. Cycads have slow growth rates, late reproductive maturity, and produce few offspring. Based on this information, cycads are:

K-strategists with a Type I survivorship curve.

A field is abandoned and an invasive plant that can live in nutrient-poor soil colonizes the area. Later, the invasive species is removed and the soil is found to have high nitrogen levels. What is the best explanation?

e. bacteria in soil and root nodules converted atmospheric nitrogen into nitrogen compounds. ✅

The terrestrial biomes shown in the diagram above vary in net primary productivity. The explanation for the variation includes which of the following?

c. I, II, and IV ✅

Which of the following is not a density-dependent population control?

Habitat destruction from natural disasters.

If a city of a population of 10,000 experiences 100 births, 40 deaths, 10 immigrants, and 30 emigrants in the course of a year, what is its net annual percentage growth rate?

0.4%.

Which of the following is a measure of the biodiversity of an ecosystem?

Total number of different species.

Which of the following would be an economic impact associated with plate movement?

Major structural damage occurs interrupting transportation and communication networks vital to business.

Which statement best explains why polar regions are colder than tropical regions?

Polar regions receive less solar energy per unit of surface area.

Five islands, A, B, C, D, and E, differ only in distance from the mainland, area, and species diversity. Which island would be predicted to have the highest species diversity?

12. Island B (large area and close to the mainland).

In a rural region of India, scientists collected data of different pesticide residue levels from closely located farming plots. Some plots used integrated pest management (IPM), while others used chemical pesticides to control pests. The data below show levels of four pesticide residues found in tomato and cucumber crops. Which statement is best supported by the data?

The greatest effect of integrated pest management was seen in lower levels of endosulfan in both tomatoes and cucumbers.

Which of the following is a true statement about the total fertility of a society

The total fertility of a society negatively decreases as the society progresses through the demographic transition.

The figure demonstrates that it requires roughly _____% more feed input to produce 1 kg of eggs compared to 1 kg of milk.

400%.

The tropical rain forests are known to have a large variety of animals. One example is the orchid mantis, which is highly camouflaged when standing on certain orchid species. Another species, the tropical cockroach, can live anywhere in the rain forest where it can find water and a food source. Which statement best describes why the orchid mantis will be more affected by global climate change than the tropical cockroach?

Orchid mantises tend to be advantaged in habitats that remain constant; the rain forest habitat is likely to shift because of global climate change..

Which of the following best explains why terrestrial trophic food chains usually do not have levels higher than tertiary consumers?

A large proportion of energy is lost as heat as it is transferred up the pyramid, so there is not enough energy available to support another level.

Which of the following techniques is a realistic solution for farmers to decrease the amount of sediment runoff into aquatic ecosystems?

18. Practicing crop rotation.

The cities of Edmonton and Calgary are relatively far north and at high elevation. Which of the following best explains the data presented in their ecological footprints?

Colder average temperatures and longer nights in Edmonton and Calgary lead to high energy usage to heat and light homes.

Which of the following does not exert a major influence on Earth's overall climate?

20. The seasonal development of temperature inversions in geographical basins.

The diagram above shows the progression of ecological events after a fire in a particular ecosystem. Based on the diagram, which of the following best explains why oak trees are later replaced by other trees?

21. Eventually the other trees grow taller than the oak trees and form a dense canopy that shades the understory.

High productivity and nutrient availability in the ocean occurs in areas with

Upwellings

Hadley cells are convection cells that form near the equator. Which of the following represents the correct order in which Hadley cells are formed?

I. Sea-level air expands and rises

II. Sunlight warms surface air near the equator

III. Air begins to cool and descend as it travels toward the poles

IV. Air travels back toward the equator along the surface of the Earth

2,1,3,4

Traveling southward from the Arctic regions of Canada to the tropics of Panama, one passes through several biomes—tundra, temperate rain forest, temperate deciduous forest, and tropical rain forest. This pattern of change in vegetation is primarily the result of

An increase in mean annual temperature and an increase in mean annual precipitation.

Which of the following is a disadvantage associated with the genetic modification of crops?

25. Genetic modifications can decrease the genetic diversity of crop species.

Timber, natural gas, and drinking water can all be considered

26. Provisioning services.

An age-structure pyramid is used to

27. Study the number and ages of people in a country.

The net primary production of a pine forest on a lava flow on Mount Fuji is about 175,000 kcal/m²/yr. Plant respiration is estimated to be 115,000 kcal/m²/yr. What is the total amount of energy produced by photosynthesis for this ecosystem?

28. 290,000 kcal/m²/year.

Using the image above, which of the following is most likely the composition of the soil sample?

29. Soil composed mostly of sand 80% sand 10% silt 10% clay

Using the diagram below, which of the following best explains how urban runoff could be decreased?

30. Replace traditional pavement with more porous pavement to increase ground infiltration.

Small populations of animals, such as those typically found on islands, are prone to extinction because

31. They are more vulnerable to unpredictable events.

Lake Lavon provides the opportunity for boating, sport fishing, water skiing, and camping. These activities would be considered

Cultural services.

During an El Niño-Southern Oscillation event, which of the following best describes conditions in the eastern part of the tropical Pacific Ocean (e.g., near Peru and Ecuador)?

High temperature / high rain.

Which of the following describes a fundamental characteristic of the Green Revolution in food resources?

. The development of new strains of crops with higher yields.

The Coriolis effect is responsible for

35. The deflection of air and water due to Earth’s rotation.

Which of the following factors leads to an increase in biotic potential?

36. An optimal level of an organism's critical nutrients.

Which of the following diagrams correctly illustrates the nitrogen cycle?

37. Diagram A correctly illustrates the nitrogen cycle.

Prescribed burns may be beneficial due to which of the following?

I. Some species depend on periodic fire for survival

II. Natural fuel loads are increased

III. Chances of potential crown fire are decreased

| and |||

It has been estimated that the growth in world population has slowed in the past decade. Despite this trend, environmentalists remain concerned about the environmental impact of world population, principally because

39. The standard of living is increasing in many developing countries, leading to an increased per capita use of natural resources.

Which of the following ecological relationships is demonstrated above?

44. Commensalism.

Which of the following best illustrates the concept of the tragedy of the commons?

45. Depletion of a public aquifer by regional farmers.

The development of dangerous strains of disease organisms represents a significant consequence of which of the following agricultural practices?ns?

46. Incorporating antibiotics into the feeding regimens of densely concentrated livestock.

Which of the following would undergo secondary succession?

47. A heavily deforested area of the Amazon.

Which of the following methods of agricultural irrigation results in the loss of the least amount of water by evaporation?

48. Drip irrigation.

In a hypothetical population of beetles, there is a wide variety of color, matching the range of coloration of the tree trunks on which the beetles hide from predators. Pollution darkened the tree trunks. Which of the following includes the most likely change in the beetle population and a correct rationale for the change?

49. The coloration shifted toward more dark-colored beetles because lighter beetles were more easily seen by predators.

A sustainable society emphasizes

50. Using energy efficiently and reusing and recycling matter.

The figure shows a cycle that includes atmospheric nitrogen. Which of the following pathways indicate how nitrogen is added to the largest nitrogen reservoir?

51. Denitrifying bacteria and volcanic activity

52

The types of food found on the two islands exert selective pressure on break size

53

Energy is harvested by producers, and available energy decreases with each trophic level transfer

Los Angles

17500000

Which of the following best describes an environmental advantage of urbanization?

55. Individuals living in cities usually have a lower transportation carbon footprint than individuals living in rural areas.

As a result of habitat destruction, the size of the Florida panther population has been drastically reduced. Which statement best explains why the population may not continue to evolve?

56. There is a lack of genetic variation for selection to act upon.

Elements that cycle in the environment and that also have a gaseous phase at some point in their cycles include which of the following?

I. Carbon

II. Phosphorus

III. Nitrogen

IV. Hydrologic (water)

57. |,||| and |V

Which of the following does not drive ocean currents?

58. Precipitation.

The single most important factor affecting high total fertility rates may be

59. The low status of women in many societies.

The ultimate source of energy for terrestrial ecosystems is

Sun.

Which of the following interactions between the warbler species is shown in the diagram?

61. Resource partitioning.

Which of the following biomes is represented by the climatogram above? (Line = temperature, bars = precipitation)

62. Desert.

A country with an age distribution like that shown in the figure is most likely a country that

63. Is experiencing slow or no population growth..

The Earth's seasons are caused mainly by

64. The constant tilt of Earth's rotational axis with respect to the plane of its orbit around the Sun.

The function(s) of soil is/are the following:

65. All of the above.

Which of the following correctly describes the disruption of an ecosystem service by an anthropogenic activity?

66. Provisioning services are disrupted by increased combustion of fossil fuels, which leads to an increase in air pollution.

A small developing country with negligible rates of immigration and emigration is going through a demographic change. Thirty years ago the crude birth rate was 44 per thousand per year and the crude death rate was high. Now the crude birth rate is 16 per thousand per year and the crude death rate is low. Which statement about the country now is most likely true?

67. The country is at the industrial stage of the demographic transition.

Which of the following best explains why the maximum sustainable yield for ocean fisheries has been exceeded?

68. Too many fish of pre-reproductive age are harvested.

Which soil indicated on the soil triangle above would most likely have the highest water-holding capacity?

69. Soil D

Which of the following pairs is correct for pioneer and climax communities?

70 E

The earths seasons are caused mainly by

64. Constant tilt of earths rotational axis with respect to the plane of its orbit around the sun

Which of the following results in a loss of genetic diversity?

40. Population bottleneck

41

41. 1.5kcal

Whitch of the following can be estimated from the sample for the intervertebrates in the pond?

42. The species richness

When seawater freezes in the polar regions, the water left behind

Becomes more dense as there is more salt dissolved in the water left behind.

Use the diagram below to answer the next questions.

The stage that has disease, famine, and a high rate of children dying

74 is A and then C for 75

72

15

73

differences in water density due to temp and saltinty