APES unit 3 question n answers graded A+ 2023/2024

APES unit 3A scientist is studying a biome that experiences large seasonal fluctuations in both temperature and precipitation patterns. Which of the following would best characterize the organisms that inhabit the biome? - correct answer Generalists would be most abundant, because the resources available would be constantly changing. Which of the following best describes a difference between generalist species and specialist species? - correct answer Generalists use a large range of resources, while specialists have a limited range of resources they use to survive. A variety of plants and animals inhabit a forest ecosystem. Which statement correctly explains why certain organisms would be more likely to survive than others if a forest fire burned the area? - correct answer Generalist species are more likely to survive because they can thrive in a wide variety of environmental conditions and can make use of a variety of different resources. Song sparrows are found in a variety of habitats, including marshes, grasslands, agricultural fields, and suburban areas. They feed on a variety of organisms, including beetles, caterpillars, snails, and earthworms. They also consume plants, including different types of grains and berries. The table below summarizes the reproductive data for song sparrows. Based on the description and the data table above, which of the following combinations best classifies the song sparrow? - correct answer r-strategist and generalist Based on the survivorship curves shown below, which of the following is a possible reason for the change in the shape of the curve from 1900 to 1980? - correct answer Improvements in health-care services and medical research Which of the following is a characteristic of an organism that displays a Type III survivorship curve, as shown in the graph above? - correct answer The organism produces large numbers of offspring every time it reproduces. Which of the following claims best supports the classification of bees as an organism that displays a Type II survivorship curve, as shown in the graph above? - correct answer Away from the colony, bees experience a constant probability of death per unit time as a foraging species. Researchers monitored the number of reindeer over time on an island off the coast of Alaska. The reindeer were introduced in year 1, and the population size was counted every 5 years. The data are shown in the table above. Which of the following claims about trends in the population size over time is best supported by the data? - correct answer The population exceeded the carrying capacity of the island, which led to a decrease in the population size following extreme resource depletion. Based on current trends and patterns, which of the following statements best predicts how the human population will change over the next 50 years? - correct answer As the population density increases, there will be an increase in disease transmission, leading to increased mortality. The rule of 70 can be used to determine a population's doubling time. Doubling time is a measure of the - correct answer population growth rate Which of the following density-independent factors can affect the size of a human population? - correct answer Heat waves Which of the following statements best describes why birth and death rates are changing in a country that is in Phase 2 of the demographic transition? - correct answer Individuals have better sanitation and access to clean drinking water. A country is currently in the second stage of the demographic transition. Currently the country has a birth rate of 37.9 births per 1,000 individuals and a death rate of 13.4 deaths per 1,000 individuals. Which of the following changes would indicate that the country is moving from the second stage into the third stage of the demographic transition? - correct answer The birth rate declines to 25.3 births per 1,000 individuals. The demographic transition model describes population change over time as a country becomes more developed. Age-structure diagrams describe how populations are distributed across age ranges. Which of the following age-structure diagrams best displays the age ranges in a country that is in stage 2 of the demographic transition? - correct answer An expansive pyramid age-structure diagram