Wetlands face destruction due to threats such as commercial development, industry, urbanization, agriculture, invasive species, pollution, climate change and dams. It is estimated that approximately half of the world's wetlands have disappeared since 1900. The loss or alteration of wetlands is believed to contribute to global warming.Know More
Wetlands are a type of ecosystem characterized by either a seasonal or permanent saturation of land by water, which can either be fresh, brackish or salt. Aquatic plants and other vegetation specific to wetlands are another defining characteristic, as they are fully adapted to the exclusive hydric soil. Wetlands are useful to the environment due to their ability to purify water, provide stability to shorelines, serve as a home for a variety species and act as a buffer for floods. Examples of wetlands include swamps, bogs, marshes and fens. Climate varies based on location, but wetlands are present on every continent with the exception of Antarctica. Of all ecosystems, it is believed that wetlands face the most environmental degradation.
Around half of the world's human population relies on wetlands for their freshwater needs. Wetlands also serve as a significant source of protein and are often used as fisheries. Conservation efforts within the United States are centered around building artificial wetlands to offset the loss of those from industry and commercial interests.Learn more about Human Impact
Some, but not all, metals are biodegradable. Metals are considered to be biodegradable if they are broken down by their environment; a common example of which is iron being broken down into rust by oxygen.Full Answer >
According to environmental lawyer Diane Saxe, factories that wish to reduce emissions can practice either pollution prevention or pollution control. Pollution prevention means changing the way a factory operates so that it produces very little or none of a particular pollutant. This usually involves eliminating a certain chemical or material from its operations. Pollution control involves installing equipment that captures pollutants before they enter the environment.Full Answer >
A pro of gasoline is that it is readily available throughout the developed world, but a con is that it can cause environmental harm. It is the most popular fuel for small automobiles, and the transportation sector depends on it. It can also be created with plant matter.Full Answer >
Building dams offers the positive results of inexpensive energy, increased recreation opportunity and flood control. However, these results are not without negative impacts, as dams interfere with the ecological system and eliminate the benefits of flooding on farmlands downstream.Full Answer >