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What pattern of population distribution does this school of fish represent?
Which of the following are abiotic factors that shape ecosystems?
If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population?
The common brush tail possum is a marsupial native to Australia. This possum was introduced to New Zealand where it had no natural predators and had an abundant food supply. Which of these likely occurred a few years after the introduction of this possum to New Zealand?
If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?
The number of pythons found throughout Everglades National Park has increased in recent years. These huge snakes are not native to Florida and are believed to have been released into the wild by pet owners. Wildlife biologists have initiated attempts to capture and remove these pythons. Which statement best explains the biologists’ reasons for removing these pythons from the Everglades?
What growth pattern describes a population whose growth rate slows or stops following a period of exponential growth?
Why are there so few aquatic plants and phytoplankton that live at the bottom zones in the ocean?
What type of growth is shown in the diagram?
What is the carrying capacity for this sheep population?
When a population grows past the ecosystem’s carrying capacity, what happens to the population?
The number of organisms per certain area
When organisms move out of the population, this is known as
Largest number of individuals of a population that the environment can support…
An animal population decreases from 800 individuals to 600 individuals. Which of the following could explain this change in population size?
On remote islands, immigration and emigration usually do not have a large effect on population sizes. A bird population on a remote island remains at a relatively constant size year after year. Which of the following most likely describes the birthrate and the death rate for this population?
Mullet are local estuary fish that move in schools and feed on plankton and plant matter. Natural predators of the mullet include spotted sea trout, sharks, pelicans and dolphins. The graph below shows how the number of mullet in an area has changed over time.
Based on the data, one student concludes that a new predator was introduced into the area during this time period. Which of the following is a likely alternate explanation for the change in the mullet population?
How does the predator-prey relationship affect a population?
The pH of the water in several lakes in Norway and Sweden had decreased to below 5.0 due to an increase in acid rain. Which of the following is most likely to happen in these lakes?
Which of the following is a limiting factor in a population of organisms?