Select the process below that is illustrated by the arrows from the atmosphere showing the conversion of nitrogen gas to a useable form available to photosynthesizers.
The picture below shows the water cycle. Something is missing from the diagram, that is a key component of the hydrologic cycle and powers
the movement of water. What is it?
Look at the diagram of the hydrologic cycle below. A smaller reservoir of freshwater is missing. What is it?
Look at the diagram below of a marine food web. Of the answer choices, the arrows best describe what aspect of the food web?
In the marine food web below, at which trophic level would you
find the least available energy (measured in kilojoules)?
Use the marine food web below to help you answer the following: How much phytoplankton biomass would be needed to produced 1 kilogram (kg) of large fish in the food web?
Look at the cycle below. It helps to regulate ocean pH and is involved in photosynthesis. What cycle is shown below?
Look at the cycle below. Which of the boxes represents a carbon SOURCE?
Look at the cycle below. Which box represents a carbon SINK that holds carbon compounds for the SHORTEST period of time?
The picture below shows the processes of which biogeochemical cycle?
The picture that
follows shows the steps of the phosphorus cycle.
Which of the statements below is best supported by the diagram of the cycle?
The phosphates absorbed by animal tissue through consumption eventually return to the soil.
In a town near the seashore, farmers started using no-till agriculture, a practice that reduces soil erosion from farm
land. Looking at the image below, which of the following long term effects will no till agriculture have on the surrounding ecosystem?
There will be less algal growth in the nearby ocean.
The picture below shows a model of the movement of water through the hydrologic cycle.
Based on the diagram, which of the following statements about the
hydrologic cycle is true?
Water from the ocean evaporates and condenses in the atmosphere.
The food web below is from a terrestrial biome. Based on this food web, which of the following correctly describes the flow of energy through the trophic levels from producers to quaternary consumers?
Brittlebrush, grasshopper, grasshopper mouse, rattlesnake, red-tailed hawk
Which year, post disturbance, had the greatest species richness?
Observed adjustments in the ecological tolerance of a species of reef fish is a result of epigenetic changes
Looking at the above graph, during the intermediate stage of
succession, what is the dominant tree species?
Scientists are studying four ecosystems with different levels of biodiversity. They categorize the different levels for the four ecosystems as shown below:
Which ecosystem most likely experienced a recent population bottleneck?
Ecosystem A, because its low genetic diversity could have resulted from an event that reduced variation in the gene pool
What is the carrying capacity for the seals living near Washington State?
Anthropogenic disruptions to Earth's resources can have sudden and severe negative consequences to the health of the native species, specifically those whose populations are already threatened
Scientists
studied the effects of industry pollution (soot) in England on the color of a single species of moth. Birds eat moths that are easily visible on trees. The scientists observed the moths found on trees and recorded their body color. The graph above shows the percentage of moths with dark and light colored bodies.
Based on the data you see in the graph, what has happened to moth populations since industrialization?
Acidic water affects the salmon's ability to sense danger from attacking predators by their sense of smell
In the Galapagos Islands, scientists measured the average beak size in a population of finches from 1976 to 1984. Their results are shown the graph below.
Birds with smaller beaks could eat grasses and soft seeds. Birds with larger beaks could eat seeds and nuts.
In years with less rain, there are fewer grasses
and the finches rely more on seeds. Droughts occurred in 1970, 1980, and 1982.
Which statement below is best supported by the data in the graph?
Finches with large beaks were more likely to survive in 1980 because they were able to feed primarily on seeds and nuts during the drought
Which statement below describes trends in temperature and
carbon dioxide over the past 800,000 years?
Carbon dioxide and temperature are directly correlated
During which year, post disturbance, did sweetgum have the greatest biomass?
The maps above show 2 islands and the distances to the closest shore. Which of the following best predicts the
effect of an invasive species on Easter Island, when compared to Madagascar?
The native species on Madagascar are more likely to survive because the island is so large
Which of the following best describes the frog species' range of tolerance to acidic conditions?
The frogs can tolerate a pH between 4.5 and 6
Scientists are studying four ecosystems with different levels of biodiversity. They categorize the different levels for the four ecosystems as shown below:
Which ecosystem listed above would most likely recover the FASTEST from a natural disruption?
Of the statements below, what best describes the Antarctic
temperature change about 440,000 years ago to about 340,000 years ago?
The temperature increases by about 12 degrees C then decreases by about 12 degrees C
Which of the claims below is best supported by the data in the table?
The black rhino is a K-selected species because it has a low number of offspring per reproductive event
The survivorship curve for bees is shown below. Which claim below explains why bees would have a type II curve?
Away from the beehive, bees experience a constant probability of death per unit time as a foraging species
The graph below shows the TFR for several countries, as measured in 2010. Which statement below best describes the data?
More developed countries have lower TFRs than less developed countries
Scientists counted reindeer over 25 years on an island near Alaska. The reindeer were introduced to the island in Year 1, and the
population was counted every 5 years. Based on the data in the table below, which statement below about the population size is best supported by the data in the table?
The population exceeded the carrying capacity of the island, which led to a decrease after extreme resource depletion
The graphs below show changes in a population over time. The dashed lines represent the
carrying capacity of the species. Which of the graphs below best shows the population of a K-selected species over time in a stable environment.
The graph below shows the total fertility rates as measured from 1950 to 2020. Projected rates are shown for 2020 to 2040.
Based on the graph below, in which year did more-developed regions reach replacement level fertility?
The age
structure diagrams below were made for various counties based on data from the 2020 census.
Which age structure diagram below shows a county that has no population growth (is stable)?
Below are age structure diagrams for counties it the United States, based on data from the 2000 census.
Which age structure diagram below shows a decreasing population due to fewer pre-reproductive aged individuals in the population?
Over a period of 35 years, scientists collected data on populations of mice and owls. Based on the table below, in which year was the owl population at carrying capacity?
The graph below shows the total fertility rates as measured from 1950 to 2020. Projected rates are shown for 2020 to 2040.
Which of the following best describes the trends seen in the total
fertility rates for the world population from 1950 to the projected rates in 2040?
TFR declined rapidly from 1960 to 2000 because women had children later in life as a result of increased educational opportunities
Over a period of 35 years, scientists collected data on populations of mice and owls.
Which of the following claims is best supported by the data shown in the table above?
The owl population experienced population overshoot between 1995 and 2000 because of increased competition for resources
r-strategrist and generalist