Also, due to the fact that more water is reaching the oceans, sea levels have risen by nearly 1 meter over the past century. This puts all coastal cities and shorelines at a risk for flooding. As temperatures increase, many plants and animals will migrate toward the poles as their current habitats become unsuitable. As a result, ecosystems will change and biodiversity will be lost. Approximately 30% of species will become extinct by 2050.
The high content of carbon causes global warming and global warming causes climate change. These changes are destroying our blue planet and making the ecosystem become sicker. Unfortunately, all the high content of carbon was released by human activities. We must reduce Carbon Dioxide emissions in the next two to three years, or we will lose our natural environment that we depend upon for survival. The 11th Hour shows us the consequences of irreversible global warming that have already begun to affect our life and environment.
Endangered Polar Bear Envision a world with an increased water and food scarcity, stronger hurricanes, melting glaciers, wildfires, rising sea levels, heat waves, and catastrophic effects on wildlife. Global warming is when the earth’s temperature heats up which is caused by greenhouse gases such as carbon dioxide, methane, and water vapor that traps heat and light from the sun in the earth’s atmosphere making it hotter than usual. The effect of the high temperatures leads to a decrease in the existence of plants, animals, and humans. Polar bears were listed as endangered species under the United States endangered species act (ESA) in May 2008. Why are polar bears endangered?
20th century warming is likely to be the biggest, during any century over the past 1,000 years for the Northern Hemisphere. Glaciers There has been a large retreat of mountain glaciers in non-polar regions during the 20th century. Northern hemisphere sea-ice extent has decreased 10% since the 1950s, and Arctic summer sea/ice thickness is likely to have decreased by 40%. Sea level has risen between 10 - 25 cm largely due to warmth expansion of the oceans and to a lesser extent due to the melting of land based Ice Mountains. The rate of sea level rise during the 20th century was about 10 times higher than the average rate during the last 3,000 years.
First off, it raises the temperature, and also the excess carbon dioxide that does not go into the atmosphere eventually gets dissolved in the oceans causing them to acidify. Water Changes Changes in water include changes in the water level, temperature, and acidity. In the last hundred years, the sea level has risen about “15 cm (6 inches) due to melting glacier ice and expansion of warmer seawater”, and in the next ninety years, “models predict that sea level may rise as much as 59
What does this rise in temperature actually do? Global warming is melting the poles and consequently, sea levels across the world are raised. This in turn brings about floods which have been known to take the lives of many around the world. Mountain glaciers are also disappearing and this leads to water shortages and flooding throughout the year in these particular areas. Also, deserts are spreading as a result of increased temperatures and minimal rainfall meaning there is less fertile land for farmers in neighbouring countries.
The area can be defined as north of the Arctic Circle, or the region where the average temperature for the warmest month is below 10°C. 2. How is the climate changing in the arctic? In the past few decades, average Arctic temperatures have risen twice the rate of the rest of the world, approximately 3-4oC in the last 50 years in Alaska. Over the next 100 years they could rise a further 3-5 oC over land and up to 7 oC over the oceans.
Lipoczi 2 First of all, scientists blamed the climate change as one of the most potential reasons by that the mammoth could fade away. According to a journal, “Near the end of the ice age, as the ocean surface temperature cooled at mid and high latitude, and evaporation slowed, the equable ice age climate would have changed to a drier, more continental climate with more seasonal extremes” (Oard). It was
Besides, the deforestation will leave a huge impact on the local populations who depend on the forests resources to survive. Tress help absorb greenhouse gasses and carbon emissions that are caused by human civilization that contribute to global climate change. Without trees, more carbon and greenhouse gasses will enter the atmosphere. To make this matter worst, trees will actually become a carbon sources when they are cut or burned. According to WWF, “Tropical forests hold more than 210 gigatons of carbon, and deforestation represents around 15 percent of greenhouse gas
Scientists studying the polar ice caps have observed consistent annual increases in the rates at which they are melting; this indicate, that the temperature of Earth’s water is increasing and sea levels are rising. In July of 2013, the temperatures at the North Pole where up to five degrees above average, in fact it was so hot that the melting ice caps formed a lake on top of the world (Breslin). Increasing water temperatures could cause hurricanes to be stronger in force and frequency; image Hurricane Sandy but stronger and on a consistent basis. Along with rising temperatures comes rising sea levels which means that all land with altitudes below sea level are at risk of becoming submerged. The U.S. eastern seaboard is particularly vulnerable, including the entire state of Florida and cities such as New York City, Washington D.C.,