Question: Which Of The Following Is The Most Likely Reason That A Population Of Mice In A Farming?

What is a likely reason for the population changes?

The decline in U.S. population growth is likely due to a confluence of factors: lower levels of immigration, population aging, and declining fertility rates. A drop in net immigration to the United States is a key factor in the country’s declining population growth rate.

What is the main reason for the population growth according to the graph?

What is the main reason for the population growth according to the graph? Cite some examples. ​ Reasons for the expected population growth include increase in the number of young unmarried mothers, high fertility rates for some ethnic groups, and inadequate sexual education and birth control provision.

Which type of population growth is shown in this graph population of bacteria?

When the rate of population increases over time in proportion to the population size, it is known as exponential growth of population. Bacterial reproduction happens in an hour time span for many bacterial species by splitting itself in half. This shows how the exponential growth occurs in bacteria.

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What are the five factors that affect population?

Factors influencing population growth

  • Economic development.
  • Education.
  • Quality of children.
  • Welfare payments/State pensions.
  • Social and cultural factors.
  • Availability of family planning.
  • Female labour market participation.
  • Death rates – Level of medical provision.

What are the three main factors that cause population change?

The three main causes of population change

  • Births – usually measured using the birth rate (number of live births per 1,000 of the population per year).
  • Deaths – usually measured using the death rate (number of deaths per 1,000 of the population per year).
  • Migration – the movement of people in and out of an area.

What factors can impact the population size of a species?

Population growth is based on four fundamental factors: birth rate, death rate, immigration, and emigration.

What are the 3 types of population growth?

And while every population pyramid is unique, most can be categorized into three prototypical shapes: expansive (young and growing), constrictive (elderly and shrinking), and stationary (little or no population growth ). Let’s take a deeper dive into the trends these three shapes reveal about a population and its needs.

What are two things that decrease a population?

The two factors that decrease the size of a population are mortality, which is the number of individual deaths in a population over a period of time, and emigration, which is the migration of an individual from a place.

Which two continents are experiencing the most rapid population growth?

Africa: fastest growing continent More than half of global population growth between now and 2050 is expected to occur in Africa. Africa has the highest rate of population growth among major areas. The population of sub-Saharan Africa is projected to double by 2050.

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What are the patterns of population growth?

Two types of population growth patterns may occur depending on specific environmental conditions: An exponential growth pattern (J curve) occurs in an ideal, unlimited environment. A logistic growth pattern (S curve) occurs when environmental pressures slow the rate of growth.

What is the major assumption of the exponential model of population growth?

Explanation: Or that one can reproduce a large number of times in a lifespan.

What are 4 factors that affect population growth?

Population growth rate is affected by birth rates, death rates, immigration, and emigration. If a population is given unlimited amounts of food, moisture, and oxygen, and other environmental factors, it will show exponential growth.

What is the impact of overpopulation?

Overpopulation is associated with negative environmental and economic outcomes ranging from the impacts of over-farming, deforestation, and water pollution to eutrophication and global warming.

What are the 5 most densely populated countries?

Macao, Monaco, Singapore, Hong Kong and Gibraltar are the five most densely populated.

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