Population Pyramids

Explanation
The given correct answer is "increased". This means that the population has grown or become larger over the past 50 years.

Explanation
Australia is indeed becoming an older population. This is supported by various demographic trends such as increasing life expectancy, declining fertility rates, and the aging of the baby boomer generation. These factors contribute to a larger proportion of the population being over the age of 65. Additionally, there is a growing demand for healthcare and aged care services, which further indicates the aging of the population.

Explanation
The decrease in death rates can be attributed to improvements in healthcare, diet, and education. With better access to healthcare services, individuals are able to receive timely and effective treatment for various illnesses and diseases. Additionally, a focus on promoting healthy eating habits and providing education on nutrition has led to a decrease in preventable diseases such as heart disease and diabetes. Furthermore, increased awareness and education on safety measures have contributed to a decrease in deaths caused by accidents or violence.

Explanation
The horizontal axis in a population pyramid does not show the number of people. Instead, it represents different age groups or cohorts in the population. The width of each bar on the horizontal axis represents the size or proportion of the population in that age group. This allows us to visually analyze the distribution of different age groups within a population and understand the demographic trends.

Explanation
The horizontal axis in a population pyramid shows the percentage of people. This means that the horizontal axis represents the distribution of the population across different age groups or cohorts. Each bar on the horizontal axis represents a specific age group, and the length of the bar represents the percentage of the population in that age group. By looking at the horizontal axis, one can understand the age structure of the population and identify trends such as population growth or decline, aging population, or youth bulge.

Explanation
Each woman needs to have an average of 2.1 babies in order to replace each generation. This means that, on average, each woman needs to have slightly more than two children to ensure that the population remains stable.

Explanation
The statement "Australians have a life expectancy of about 81.3 years" is true because on average, Australians have a relatively high life expectancy compared to many other countries. This can be attributed to various factors such as a high standard of healthcare, a generally healthy lifestyle, and access to quality education and resources. However, it is important to note that life expectancy can vary among different demographics within Australia and is influenced by factors such as gender, socioeconomic status, and geographic location.

Explanation
In 1982, the median age of Australia was 36.4. The median age represents the middle value in a set of ages arranged in ascending order. This means that half of the population was younger than 36.4 years old, while the other half was older.

Explanation
The statement "Young age groups are shrinking" is true. This means that the population of young people is decreasing. This could be due to various factors such as declining birth rates, increased migration, or aging populations. The shrinking of young age groups has implications for various aspects of society, including workforce dynamics, healthcare systems, and social support structures.

Explanation
The given statement is "there are more men than women". The correct answer is False. This means that the statement is incorrect, and there are not more men than women.

Explanation
The statement "Australians are becoming an older population" is true. This means that the average age of the Australian population is increasing over time. This can be attributed to factors such as increased life expectancy, declining birth rates, and the aging of the baby boomer generation. As a result, there is a growing proportion of older individuals in the country, which has implications for healthcare, social services, and the economy.

Explanation
Demography is the study of human population, including its size, structure, and distribution, as well as the changes in these factors over time. It involves analyzing various aspects such as birth rates, death rates, migration patterns, and socio-economic factors that influence population dynamics. Demographers use statistical methods and data to understand population trends and make projections for the future. By studying demography, researchers can gain insights into issues such as population growth, aging, urbanization, and the impact of these factors on society, economy, and public policy.

Explanation
The lower birth rate can be attributed to the increased use of contraceptives, which effectively prevent unwanted pregnancies. Additionally, more females opting for a career may result in delayed or reduced family planning, leading to a lower birth rate.

Explanation
Australia allows migrants to come to Australia to boost the population. This is true because Australia has a skilled migration program that aims to attract skilled workers from other countries to help fill gaps in the labor market. Additionally, Australia also has a family migration program that allows Australian citizens and permanent residents to sponsor their family members to immigrate to Australia. These policies are in place to address the country's aging population and to ensure economic growth and development.

Explanation
Australia does not have one of the longest life expectancies in the world. The statement is false.

Explanation
The correct answer is declining birth rates and death rates. This means that the number of births and deaths in a population is decreasing over time. This can lead to an aging population because there are fewer young people being born to replace the older generation. Additionally, advancements in healthcare and improved living conditions can also contribute to lower death rates, allowing people to live longer and further contributing to an aging population.

Explanation
Australia is considered a developed country because it has a high standard of living, advanced infrastructure, and a strong economy. It has a well-developed healthcare system, education system, and technological advancements. Australia also has a high Human Development Index (HDI), which measures factors such as life expectancy, education, and income. Additionally, Australia has a high GDP per capita and a high level of industrialization. Overall, these factors indicate that Australia is a developed country.

Explanation
Developing countries usually have higher fertility rates than developed countries because they tend to have lower levels of education, limited access to contraception, and higher infant mortality rates. Additionally, cultural and societal norms may place a higher value on having children in developing countries. These factors contribute to a higher number of births per woman in developing countries compared to developed countries.