Human Population - Study Notes

NAME _______________________________ CLASS ____________ DATE ______________ Human Population Web Quest Instructions HUMAN POPULATION WEB QUEST QUESTIONS 1.) What was the population of the world around the beginning of the first Millennium? around 170 million people ________________________________ Chart this value on the provided graph. 275 million people 2.) What was the population in the year 1000? _______________________ Chart this value on the graph. about 105 million 3.) It took 1000 years to increase the population by __________________ humans. How many 1024 years have passed years have passed since that time to present day?____________________________ 4.) 1 billion people In the year 1800, the population rose to __________________________. Chart this value on the graph. 5.) What factors lead to the sudden increase in population? (be complete with your answer!) - Agricultural advancements, such as the introduction of new crops and techniques like crop rotation and selective breeding, leading to increased food production and sustaining larger populations. - Improved sanitation and hygiene practices, which reduced the spread of diseases and increased life expectancy. -Technological advancements in medicine, including vaccines and antibiotics, which reduced mortality rates and improved overall health. - Industrialization, which led to urbanization and the growth of cities, providing new economic opportunities and drawing people away from rural areas. 7.83 billion 6.) In the 1800 years from year 0, how many humans were added to the population?_________ 7.) How many years did it take for the human population to double from its size in 1800? 123 years _____________. Chart the population at that time _________________________________ 8.) What factors led to the sharp increase in population size after 1927? (BE SPECIFIC and USE COMPLETE SENTENCES!!!) - Medical advancements, such as the widespread use of antibiotics and improvements in surgical techniques, further reducing mortality rates and combating infectious diseases - Technological innovations in agriculture, known as the Green Revolution, which increased crop yields through the use of fertilizers, pesticides, and high-yield crop varieties. - Economic and social changes, including increased access to education and healthcare, empowering families to make informed decisions about family planning and contributing to declining birth rates in some regions. NAME _______________________________ CLASS ____________ DATE ______________ 1800 years 9.) From year zero, it took this many years to reach our first billion people ________________ 123 years 10.) It took this many years to double this and reach two billion people __________________ 33 years 1960 11.) It took this many years to add yet another billion (3) people ___________ in year ________ 1974 14 years 12.) It took this many years to add another billion (4) people _______________ in year _______ 13 years 1987 13.) It took this many years to add another billion (5) people ______________ in year _______ 12 years 1999 14.) It took this many years to add another billion (6) people _______________ in year ______ 105 million people 15.) Look at question #3 ... It took 1000 years to increase the population by ________________ 7.7 billion people people. In the 1000 years since that time, the population has increased by ______________ 16.) Be sure that all these population sizes are properly graphed on your population graph. What trend are you seeing develop in the formation of the data points? What type of population growth pattern does this appear to be? The data points on the population graph indicate an exponential growth pattern. As time progresses, the rate of population growth appears to accelerate, indicating a rapid increase in population size over relatively short periods around 9 to 10 billion people 17.) What is the estimated population size predicted to be in 2050________________________ Place this as a point on the graph, BUT DO NOT INCLUDE IT IN YOUR LINE. 18.) Return to the internet browser and do an internet search on the current world population 7.9 billion people today. Record the number and place it on the graph______________________________ 19.) Draw a population curve through the data points on your graph up until the CURRENT DATE. DO NOT USE THE 2050 PREDICTION. What does your graph indicate about the population growth pattern of the human population? 20.) Is the growth rate of the human population speeding up or slowing down? The growth rate of the human population appears to be speeding up, as evidenced by the exponential curve on the graph 21.) What factors do you suppose are affecting this change in population growth? - Continued advancements in medical technology and healthcare, leading to further reductions in mortality rates and increased life expectancy - Economic development and urbanization, which often coincide with declining birth rates as people have fewer children in urban settings - Access to education, particularly for women, which tends to correlate with lower fertility rates as educated individuals often delay marriage and childbirth to pursue career and personal goals. - Cultural shifts towards smaller family sizes and family planning practices. - Environmental and resource constraints, which may eventually impose limits on population growth as finite resources are depleted or become increasingly scarce. 22.) Do you believe the 2050 prediction is accurate? What leads you to this conclusion? The accuracy of the 2050 population prediction depends on various factors, including how accurately current trends in fertility rates, mortality rates, and other demographic factors are projected into the future. However, projections are subject to uncertainty and can be influenced by unforeseen events, technological advancements, and changes in social and economic dynamics. Therefore, while projections provide valuable insights into potential future population trends, they should be interpreted with caution NAME _______________________________ CLASS ____________ DATE ______________ EXTRA CREDIT – 10 POINTS Points will ONLY be awarded if ALL QUESTIONS are answered and the Graph is completed! [5p] – Do an internet search on ACID RAIN. Write a very detailed description on the CAUSE of acid rain. I DO NOT WANT THE DEFINITION! I want the causes for it. Acid rain is caused by a complex interaction of pollutants in the atmosphere, primarily sulfur dioxide (SO2) and nitrogen oxides (NOx), which are released into the air through human activities such as burning fossil fuels (coal, oil, and natural gas) in power plants, industrial processes, and vehicle emissions. When these pollutants react with water vapor, oxygen, and other chemicals in the atmosphere, they form sulfuric acid (H2SO4) and nitric acid (HNO3), which then fall to the Earth's surface as acid rain. This acidic precipitation can have harmful effects on the environment, including acidifying soil and bodies of water, damaging plant life, and corroding buildings and infrastructure. [5p] Do an internet search for HABITAT DESTRUCTION. Write a paragraph on what causes this AND how it affects the local ecosystems. Habitat destruction is primarily caused by human activities such as deforestation, urbanization, agriculture, mining, and infrastructure development. These activities result in the clearing and fragmentation of natural habitats, leading to the loss of biodiversity and disruption of ecosystems. Habitat destruction can have severe consequences for local ecosystems, including the loss of habitat for native species, reduced genetic diversity, altered food webs, and increased vulnerability to invasive species and diseases. Additionally, habitat destruction can contribute to climate change by releasing stored carbon dioxide into the atmosphere and disrupting natural carbon cycles. Overall, habitat destruction poses a significant threat to global biodiversity and ecosystem stability.