Growth Pollution_Population density_limiting factors

Science 9

1. BLACK BOARD Reporter： XXX Time ： 202X . 12.28 Population Growth

2. Population It refers to a group of organisms of the same kind or species living in the same place at the same time. A population may increase or decrease due to birth, death, immigration and migration.

3. Population Growth • It is the change in a population over time, and can be quantified as the change in the number of individuals of any species in a population using "per unit time" for measurement. • In demographics, population growth rate (PGR) is the rate at which the number of individuals in a population increases in a given time period as a fraction of the initial population.

4. The Effects of Overpopulation More people means an increased demand for food, water, housing, energy, healthcare, transportation, and more. And all that consumption contributes to ecological degradation, increased conflicts, and a higher risk of large-scale disasters like pandemics.

5. Just a by looking at the picture, we can say that the Philippines has big population. This big population is brought about by the rapid population growth in the country.

6. Countries with the Largest Population

7. Factors that Affect the Population Growth

8. The population naturally increases if the number of births is greater than the number of births at any given of time or if the death rate is slower than the birth rate. 1. The birth rate exceeds the death rate.

9. 2. The development in Science and Technology has made the life expectancy of Filipinos longer. Department of Science and Technology (DOST)
With the help of the Department Science and Technology (DOST), the agency tasked by the government to develop pharmaceutical products for priority health problems, better health and long life are attained.

10. Filipinos believed that children are blessings to the family and that more children mean more blessings. I the rural areas where the main livelihood is agriculture, to have children means more hands to help in tilling the field, harvesting, and engaging in other means of livelihood. 3. Some beliefs and practices of the Filipinos also influence the population growth.

11. More people means an increased demand for food, water, housing, energy, healthcare, transportation, and more. And all that consumption contributes to ecological degradation, increased conflicts, and a higher risk of large-scale disasters like pandemics. The Effects of Overpopulation

12. Exponential growth of a population is characterized by continuous birth rate through time that is not hampered by insufficient food supply or the presence of disease. Increasing population size always reach a size limit brought by the shortage of one or more factors such as space, water, nutrients or by adverse conditions such as disease, drought, and extreme weather conditions.
In a specific area, the carrying capacity is referred to as the maximum number.

13. There are two categories of limiting factors on population growth density-independent and density-dependent limiting factors.

14. Density dependent limiting factors are those whose influence population growth vary depending on population density (e.g. competition, diseases, predation, etc.). An increase in population density could lead deficiency in resources like food, shelter, and water that could lead to increased competition that often cause harm to individuals. Increase in population density could also increase the amount of waste produced by members of the population, which could lead to unhealthy living space that results to diseases. The previous examples show how decrease in population growth are affected by density-dependent factors

15. Density independent limiting factors affect populations regardless of their population size. These include natural disasters, unusual weather, seasonal cycles and certain human activities such as obstructing the rivers and cutting of trees

16. https://www.google.com/imgres?imgurl=https%3A%2F%2Flookaside.fbsbx.com%2Flookaside%2Fcrawler%2Fmedia%2F%3Fmedia_id%3D3822610761146121&tbnid=KBpBfZTAopFeNM&vet=1&imgrefurl=https%3A%2F%2Fwww.facebook.com%2FPopulationMatters%2Fphotos%2Fa.294081780665721%2F3822610761146121%2F%3Ftype%3D3&docid=YoUzTpXl7UIobM&w=1800&h=1800&hl=en-US&source=sh%2Fx%2Fim%2Fm5%2F4&kgs=a28177dfcc5ac19b&shem=trie https://images.app.goo.gl/1BP1VbbkcsVjHB3D8 https://images.app.goo.gl/KbPFWwzUPavoV32X6 Reference: