Tuesday, 25 July 2017

Population Explosion

After reading an article on Wonderopolis called "How many people are on Earth?" the Justice league collaborated on a Cause and Effect map and summary about the population explosion on Earth.

Globalization is a way of connecting with the world. In New Zealand we connect with the globe through trade, migration, science and technology, to name a few. New Zealanders have the potential to connect with over seven billion people globally. Scientists believe that the number of people on earth will continue to increase. This is because more babies are born each year than there are people who die. Experts expect this trend to continue for the next couple of decades causing a population explosion.  Scientists identify the advancements in science, technology, and medicine as the reasons why people today live a lot longer than they used to.

The scientific developments in agriculture has helped the population explosion. People are now able to produce food on a greater scale e.g. farm more animals and grow more crops. However these advancements can have some negative impacts on the earth. Rivers are polluted from runoff from farms and intensive farming methods mean animals are treated poorly. Another negative effect of farming at such a great scale is that people are cutting down forests and jungles to make space for farmland thus eradicating the animals habitats.

Technology advancements such as airbags, seatbelts and fire extinguishers now means people are kept safer than ever before. Fire alarms are helping people to avoid deaths caused by fires and car safety features mean people can survive even serious crashes. Without these advancements people would be at a higher risk of losing their life.

Scientists have created cures/vaccinations causing the eradication of diseases such as polio and smallpox. Preventative vaccinations means thousands of people are now immune to the deadly diseases that wiped out large numbers of people in the twentieth century.

While we are living longer than ever before we need to be aware that as Earth's population continues to expand, strains on resources will continue to grow. The problem for future generations will be to expand, conserve, and better distribute Earth's resources (food, water, shelter and energy) to meet the needs of its growing population.

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