Population Size and Structure

8 May 2023
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question
A square kilometer of forest has 200 deer. What is the term that is used to describe this number?
answer
population density
question
A population of elephants becomes too large, and several members leave the population. What is this process called?
answer
emigration
question
Raccoons prefer woody areas and are omnivores, which means that they eat meat and plant materials. They are nocturnal, meaning that they are active at night. They are often eaten by mountain lions, gray wolves, and coyotes. Which of the following is a limiting factor for a raccoon population?
answer
deforestation
question
In one year, 35 giraffes are born to a population. What is this number?
answer
birth rate
question
Typhoid fever is caused by bacteria in contaminated food or drink. In 1903, an outbreak of typhoid fever in Ithaca, New York, killed almost 80 people. In addition, more than 1,000 Ithaca residents became sick with the disease. The population shares the public water source. Which type of limiting factor was involved in the typhoid outbreak that occurred in Ithaca?
answer
density-dependent factor
question
Predict what might happen to a population that is experiencing little immigration and emigration, low birth rate, and high death rate.
answer
The population decreases.
question
The great hornbill and the toucan both eat the same fruit, insects, and nuts. They both live in the rainforest. Their large bills function to get food and also as warning coloration. Which of the following is a limiting factor to the toucan population?
answer
competition
question
Colorado has a vast population of lodgepole pines. A population of lodgepole pines have been killed in a section of the forest. What is a possible limiting factor of that population?
answer
devastation by the pine bark beetle
question
if there is a high death rate and large amount of β‡’ ___________,populations will likely decrease.
answer
emigration
question
In August 2005, Hurricane Katrina caused significant damage in several states along the Gulf Coast, including Alabama, Mississippi, and Louisiana. Thousands of people were evacuated from their homes due to flooding and other damage that was caused by the storm. Which type of limiting factor was Hurricane Katrina?
answer
density-independent factor
question
Which of the following best describes the characteristics of less fertile soils, increase in disease-carrying mosquitoes, and flooding of homes and villages?
answer
effects of dams on society
question
The construction of wind farms has affected the migratory patterns of some bird populations. Bird populations have been noted to no longer increase and sometimes even decrease in these areas. What is this known as?
answer
a density-independent limiting factor