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ap enviro final
| Question | Answer |
|---|---|
| which level of the atmosphere contains the ozone layer? | stratosphere |
| approximately how much of the potential energy available from the sun's rays hitting earth is used in photosynthesis? | 1 percent |
| which zone changes the most from high tide to low tide | B |
| scientists have begun conducting studies on a lake in the northeastern united states after several complaints about increases in algal blooms. they believe that residential fertilizers and stormwater runoff are two sources. use information to calculate | 66 percent |
| which is the benthic zone | E first layer of the sea floor |
| what factor is most closely related to adiabatic cooling and heating | air pressure |
| the abundance of producers and fish off of the west coasts of certain continents is caused by | upwelling |
| which best describes the concept of gross primary production | total amount of solar energy that producers capture via photosynthesis |
| which example supports the intermediate disturbance hypothesis | forests that are prone to natural forest fires have a greater diversity of species. |
| how does an algal bloom affect the oxygen content of the water | an algal bloom will cause the oxygen content in the water to decrease, leading to hypoxic conditions |
| according to the figure, which has the highest albedo | fresh snow |
| latent heat release occurs when | water vapor in the atmosphere condenses into liquid water |
| in which step of the nitrogen cycle do plants absorb nitrogen compounds | assimilation |
| which statement best represents the relationship between photosynthesis and respiration | photosynthesis stores energy while respiration releases it |
| starting at a latitude of zero degrees and moving north or south with increasing latitude, which is proper order for the three atmospheric convection cells | hadley, ferrell, polar |
| what is one significant effect of upwelling | it creates an area of high nutrient levels along the coast |
| what do the tundra and boreal forest biomes have in common | II and III, slow decomposition rates and nutrient poor soils |
| assuming NPP is 40 percent of GPP what would the GPP be for the continental shelf ecosyste | 900 g |
| which shows the complex interactions among species within an ecosystem | food web |
| at what latitude is the surface of the earth moving at the highest velocity | 00 |
| which biome is characterized by the presence of permafrost | tundra |
| which best describes albedo | the ability of an object to reflect light |
| an ecosystem has an ecological efficiency of 10 percent. if the producer level contains 10,000 kilocalories of energy, how much energy does the tertiary consumer level contain? | 10 kcal |
| humans can affect the nitrogen cycle through | I, II, and III |
| which process of the nitrogen cycle involves the conversion from nitrate to nitrous oxide and nitrogen gas | dentrification |
| which is the benthic zone | d, first layer of the sea floor |
| in the hydrologic cycle, evaportation | is caused by heat from the sun |
| which does not happen as a result of clear cutting trees and forests | an increase in transpirtations |
| which atmospheric layer contains ozone, a layer that helps protect organisms from the suns harmful UV radiation | stratosphere |
| what is a watershed | an area of the land that drains to a particular water body |
| what law explains energy loss within an ecosystem | second law of thermodynamics |
| water that moves across the surface of the land into streams and rivers is called | runoff |
| which is earth's most diverse biome | coral reefs |
| calcium and magnesium | are derived from and associated with rocks |
| what is the wild belt in which we live | westerlies |
| which is not a characteristic of estuaries | contaminants build up easily due to lack of water movement |
| what is the best explanation for the amount of rain that occurs at the equator | warm air rises at the equator, condenses at a high altitude, and falls back to earth as rain |
| climates are mostly classified by which two factors | temperature and precipitation |
| what level of the atmosphere contains charged gas molecules that contribute to the northern lights or aurora borealis | thermosphere |
| if summer has just begun in australia | the northern hemisphere is tilted away from the sun. II only |
| which is an example of a wetland | I, II, and III |
| US legislation has limited the levels of sulfur that can be present in gasoline. this measure was designed to limit which aspect of the sulfure cycle | acid precipitation |
| which element is the primary component of fossil fuels | carbon |
| in which zone does most photosynthesis occur | B |
| at which point in the hydrologic cycle are conditions most likely to contribute to the development of an algal bloom | runoff |
| eutrophic lakes | have very high productivity as a result of high levels of nutrients |
| what human activities have affected the phosphorus cycle | I and III. creation of fertilizers and the use of dishwashing detergent. |
| what might help restore an area that has been declared a dead zone because of algal blooms | reduce nutrient inputs to the area |
| which best explains the observation that warm air is more humid than cool air | warm air has a higher capacity for water vapor than cool air |
| a population of birds exists on an island and consists of four phenotypes | 47 percent |
| why is it challenging to estimate the number of species on earth? | II and III. new species exist and some species are only visible with a microscope |
| which is the best description of species evenness | the relative dominance of each species within an ecosystem |
| which measure of biodiversity takes into account the number of species present and the relative abundance of the species present | shannon's index |
| studying regrowth of a clear cut forest. beetles | microevolution |
| how many known mass extinctions have occurred since the evolution of complex life 500 million years ago | 5 |
| which of the following is true about an individuals phenotype | it many be affected by the envionrment |
| which is a change in the genetic composition of a population as a result of descending from a small number of colonizing individuals | the founder effect |
| what is a trait that improved an individuals fitness | an adaption |
| considering only the data presented in the table, which changed between 1905 and 2005, what changed | I and II, the species evenness of trees in the forest and the number of trees in the forest. |
| which does not contribute to an increase in the biodiversity of an ecosystem | habitat loss |
| which is used to determine how closely two species are related | I, II, and III |
| if two similar species each occupy a smaller niche when they live together than they would if they lived alone, they are said to be | partitioning resources |
| a branding point on a phylogenetic tree indicates | a speciation event |
| a population of mice originally consisted, by what percentage did the black mice decrease after the mating event | 20 percent |
| which is not considered to be a factor in the current increase in extinction rates | natural selection |
| which cellular process can create genetic diversity | I and II, mutation and recombination |
| what occurs when a small group from a population colonizes a new area | founder effect |
| when north america beavers build a dam on a river they convert it to their wetland. which types of diversity increased because of these activites | I, II, and III |
| which two scientists are credited with developing the theory of evolution by natural selection | darwin and wallace |
| using living organisms and fossils, charles darwin developed the idea that evolution can occur through | natural selection |
| which process can be controlled most directly by humans | artificial selection |
| a subset of individuals from a mainland population of lizards was caught in a flood and survived by swimming to a nearby island. this is the founder effect and | allopatric speciation |
| which is not an adaption | the breeding of florida panthers with texas panthers to increase genetic variation |
| the change in genetic composition of a population over time is called | evolution |
| which factor would lead to the most rapid rate of evolution | genetically modified organisms |
| what is the process by which part of one chromosome breaks off and attaches to another chromosome | recombination |
| an east african wildebeest population inhabits open plains and grasslands in the serengeti. these features describe characteristics of the wildebeests | realized niche |
| according to the fossil record, the number of genera of plants and animals that have been present on earth has | varied greatly over the last 500 million years |
| which is the best description of evolution | the genetic change within a population over time |
| which decreases genetic variation | I and III. bottleneck effect and genetic drift |
| which is not related to geographic isolation | sympatric speciation |
| which of the following is not a key idea of darwin's theory of natural selection | the genotype of an organism determines its phenotype |
| which of the following would be the best example of an individuals phenotype | having brown eyes |
| which species would be most vulnerable to environmental changes | niche specialists |
| which community would be least vulnerable to the effects of environmental disturbances | community 3 |
| if a bird of a species that normally has green feathers produces an offspring with blue feathers, this is most likely the result of | a genetic mutation |
| the table lists the number of individuals of each species found within four field communities. which community is most diverse overall? | community 3 |
| macroevolution refers to evolution that | gives rise to a new species, genera, families, classes, or phyla |
| which statement about mutations is not correct | all mutations are harmful |
| which is not a key idea of darwin's theory of evolution by natural selection | differences in traits are not associated with the ability ot reproduce |
| which questions might a scientist use to determine whether a group of organisms constitute a species | I and II. are they distinct. can they interbreed |
| if allopatric speciation occurs after a population has split into two distinct populations, what would happen if the two species were reunited after many generations | the two populations would not be able to interbreed |
| how might a meteorite landing on earth lead to a worldwide mass extinction | a collision would produce a dust cloud that blocks sunlight, reducing photosynthesis |
| evolution occurs through | I, II, and III. |
| the loblolly pine requires a minimum temperature, how would you expect the distribution to change? | spread north |
| a river contains two species of trout, this is because brown trout have | larger range of tolerance in regard to temperature |
| a koala's diet is composed of eucalyptus leaves. the koala is most likely a | niche specialist |
| which is not a random process that evolution can occur through | artificial selection |
| which process of evolution is not random | artificial selection |
| which refers to the variety of ecosystems within a region | ecosystem diversity |
| which is not a benefit of biodiversity | agricultural fields have increased in size to support the many plant species used for crops |
| if a small population loses genotypes by chance over time, it has experienced | genetic drift |
| which is used to measure the diversity of an ecosystem | II and III. species richness and evenness |
| the fundamental niche of a species can include | I only. the amount of sunlight available |
| the number of species in a given area is known as | species richness |
| the physical expression of an organisms genes is called its | phenotype |
| which community clearly has low species evenness | community 2 |
| under what conditions would sympatric speciation most likely occur | polyploidy |
| which factor is most significant when determining the diversity of an ecosystem | the number of species present |
| in evolutionary biology, the term fitness refers to | an individuals ability to survive and reproduce |
| ecological research in new york. climate change will alter the aspen's | macroevolution rate |
| earthworms live in many grass and forest ecosystems and aerate soil as they burrow. traits refer to the | niche |
| which pair would most increase the rate of evolution within a species | slow environmental change and high genetic variation |
| two species that have a high degree of niche overlap will most likely | compete intensly |
| which community has the highest species evenness | community 3 |
| if you were studying niche of bird, you would investiagte | the places were it builds its nest |
| which would result in the highest rate of evolution | a population with high genetic variation |
| which is not a key component of the theory of evolution by natural selection | differences in traits are not associated with differences in survival and reproduction |
| when a population suddenly reduces in size, it has experienced the | bottleneck effect |
| which is the best example of artificial selection | humans breed horses for speed |
| a population of rabbits live in a meadow, this is an example of | allopatric speciation |
| which would least affect the ability of a species to adapt to a new environment | amount of parental care |
| what percent of species that have ever lived are thought to be extinct | 99 percent |
| which would not be considered when determining the fundamental niche of a species | reproductive rate |
| current estimates for the number of species on earth range between | 10 million to 20 million |
| climate change poses a threat to niches of living organisms and to their survival. niche __ are more likely to survive changing climate conditions because | generalists. they have a variety of food sources and acceptable habits |
| the major factors that increase GDP include | I, II, and III |
| following the growth of paramecium in gause's experiment, it would display a __ shaped curve as the population approaches __ | S. carrying capacity |
| which is not a reason that the agricultural revolution led to increase in the human population | it reduced the amount of pesticide on crops |
| tapeworms in the human gut are an example of | parasites |
| suppose a nation has a crude death rate. population growth | 1.5 percent |
| which best explains growth of human population in last 8,000 years | technology has allowed the species to increase earth's carrying capacity |
| which factor is not likely to affect the size of a country's population over time | the current carrying capacity |
| which is not an example of two organisms in a mutualistic relationship | humans and protozoa |
| during a single oregon winter, what explains population of mosquitoes | density independent factors |
| what is the study of factors that cause populations to increase or decrease | population ecology |
| if a population of birds increases what is its rate of growth | 0.20 |
| human population growth has increased dramatically in the last 100 years because of | modern medicine |
| to determine the number of individuals that will be added to a population in a specified time we multiply the growth rate by the | original population size |
| a population of rabbits is introduced and grow then slow. whats the reason? | the carrying capacity has been reached |
| there are 42 million ducks. how many ducks per lake | 3.5 ' 102 |
| which is not likely to limit a population size | the genetic diversity of the population |
| the per capita ecological footprint provides demographers with a way to measure | the amount of land required to support each person |
| approximately what percent of people in developed countries live in urban areas | 75 percent |
| country A versus B death rates and standards of living | country A has an older population |
| the crude birth rate is expressed as a | ratio |
| which of the following accurately compares growth patterns in eagles and bacteria | under ideal conditions bacteria and eagle populations both grow exponentially. |
| sustainable development refers to | an improvement in living conditions through use of resources without causing environmental harm or depletion of resources |
| what is a possible effect of deforestation on the carbon cycle | increase in the amount of CO2 in the atmosphere |