Crowded Planet

For this unit, our class focused on how math could be used to predict the future population of the earth, or certain countries, by using past population data, or statistics. From this unit, I have learned that our population will continue to increase until our world reaches its carrying capacity, or we run out of food, water, air, or anything essential to survival. One of the main points we found was that population growth causes shortage of resources. If the world’s population continues to grow, at the rate it currently is growing at, there will be around 11 billion people on the planet by 2050. As the number of people increases, and as countries become more industrial, more energy will be required to run cars, factories, and sustain our unhealthy lifestyle. For this project we got into groups of four that each got a global issue that has to do with overpopulation. Each group then created a website,so my group created a website about how overpopulation affects the environment (found here),  and then linked it to the main webpage another group created.

Math Content

Percent Growth, Exponential Growth, Doubling Time, Calculating Growth Rates and Yearly Growth, and writing and using formulas to make predictions.


This project really opened my eyes on the effects something as simple as a growing population could have on the world around us. I learned a lot of information about how overpopulation affects the environment and my group was able to spread that knowledge to others through a webpage each group created. I think that my group’s webpage on how overpopulation affects the environment and climate turned out very well. I believe that this is a very important topic to pay attention to, as there is a visible connection to how population growth affects us, the plants around us, the fish in the sea, and the animals out in the wild. For my part of the webpage, I focused on greenhouse gases, and mainly carbon dioxide. I learned that as our population grows, and we continue to live life the way we do now, then the levels of carbon dioxide would increase. The earth’s atmosphere naturally receives carbon dioxide from volcanoes and bodily processes such as breathing. The carbon dioxide is absorbed into the oceans making them more acidic. The acidic water hurts plants and animals by killing off coral reefs and dissolving shelled organisms. This in turn hurts the food industry, involving fishing, and the food supply for various other marine animals. This causes a domino effect that affects every living thing. More carbon dioxide means more green house gasses in the atmosphere, which trap the sun’s infrared radiation in the atmosphere,because the ocean can absorb only so much, making temperatures rise or change. The change in temperature affects the concentration of water in its different states, involving rain forests, tundra, glaciers, permafrost and deserts. The increase in levels of carbon dioxide, a by-product of over population and human consumption, plays a key role in the change of weather, directly affecting climate. My groups members, each focused on one section and really tried to go in-depth into how overpopulation really changes the way we all could live our lives. This project and unit showed how math could be applied to real world events, and actually used in life, which made it easier to understand.


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