Climate change...

Climate change in the world is the most important threat to the Earth. It affects not only the Philippines but all the countries around the world. Climate change makes our environment unstable. Climate change is the cause of Global warming and Heat wave. It also triggers some natural calamities such as Super typhoons, floods, tornados, earthquakes, landslides, Soil erosions. Climate change is caused by the holes in the ozone layer, because of this the Earth becomes vulnerable to the UV rays coming from the sun. These results to the loss of properties, lives of people and animals, the crops destroyed. It’s all because of our activities which damages our environment. We have abused our nature, and now the nature is taking its course to open our eyes on what we have done. It is our responsibility to take care and manage our Mother Earth and the gifts that she is giving us. Industrialization, deforestation, and pollution have greatly increased atmospheric concentrations of water vapor, carbon dioxide, methane, and nitrous oxide, all greenhouse gases that help trap heat near Earth's surface. Humans are pouring carbon dioxide into the atmosphere much faster than plants and oceans can absorb it.

Climate change is a change in the statistical distribution of weather over periods of time that range from decades to millions of years. There are places that have different climates some changes may be limited to specific region or may occur across the whole earth. Some experts point out those natural cycles in Earth's orbit can alter the planet's exposure to sunlight, which may explain the current trend. Earth has indeed experienced warming and cooling cycles roughly every hundred thousand years due to these orbital shifts, but such changes have occurred over the span of several centuries. Today's changes have taken place over the past hundred years or less.

Because of climate change, Glaciers around the world could melt, causing sea levels to rise while creating water shortages in regions dependent on runoff for fresh water. Strong hurricanes, droughts, heat waves, wildfires, and other natural disasters may become commonplace in many parts of the world. The growth of deserts may also cause food shortages in many places. More than a million species face extinction from disappearing habitat, changing ecosystems, and acidifying oceans. The ocean's circulation system, known as the ocean conveyor belt, could be permanently altered, causing a mini-ice age in Western Europe and other rapid changes. At some point in the future, warming could become uncontrollable by creating a so-called positive feedback effect. Rising temperatures could release additional greenhouse gases by unlocking methane in permafrost and undersea deposits, freeing carbon trapped in sea ice, and causing increased evaporation of water. 

http://news.nationalgeographic.com/news/2004/01/0107_040107_extinction.html