The term "global environment" refers to Earth's environment in general. Many environmental issues primarily affect local and national areas. Others deal with problems that face the entire planet.Know More
Many aspects of local ecosystems are self-contained. However, global environmental factors have broad effects on regions across the globe. If the planet's temperature rises considerably, ecosystems around the world are affected. The notion of a global environment deals with how connected even distant regions are and how events in one region affect everyone. While man-made factors receive the most attention, there are a number of natural factors as well. Volcanic eruptions, for example, can affect the entire planet.
Many environmental issues deal with local problems faced by nations and smaller communities. Particulate pollution, for example, tends to affect a metropolitan area but spread no further. Particulate matter in Chinese cities only affects people living near factories and power plants.
The carbon dioxide produced by these factories and plants, however, has a worldwide effect. Carbon dioxide spreads throughout the atmosphere, and the warming produced by carbon dioxide affects places around the world. Often, people neglect the impact that land-based actions have on the oceans. If the Gulf Stream or other streams of water in the ocean are disrupted, however, the effects are profound.Learn more about Environmental Science
Global warming affects people by impacting climate with higher temperatures and catastrophic weather conditions, causing health problems by exacerbating pollution and spreading pests, and decreasing living space through rising sea levels. These conditions bring on famine, drought, epidemics and financial turmoil.Full Answer >
Modern models of climate change are grounded in observable evidence and reasonable inference, so they can be regarded as factual. Global warming happens when sunlight warms the Earth's surface and causes it to radiate heat back up into the atmosphere. That heat is then trapped by several known gases.Full Answer >
Current global climate change is the seventh climate change event in the past 650,000 years. Unlike past climate change episodes, many experts believe that human activity plays an important role in current global climate changes.Full Answer >
Global warming happens when carbon levels in the atmosphere rise, trees are cut down in large quantities and the ozone layer is destroyed. Without managing these things, the Earth risks suffering from adverse effects.Full Answer >