Dependence of Man on the Environment Essay

Over population is one of the contemporary environment issues. Overpopulation is a generally unwanted condition where an organism’s numbers exceed the carrying capacity of its habitat. The term often refers to the relationship between the human population and its environment, the Earth, or smaller geographical areas such as countries. Overpopulation can result from an increase in births, a decline in mortality rates, an increase in immigration, or an unsustainable biome and weakening of resources. It is possible for very sparingly populated areas to be overpopulated if the area has a skimpy or non-existent capability to sustain life.

Another contemporary environment issue would be Energy conservation which refers to efforts made to cut energy intake. Energy conservation can be achieved through increased efficient energy use, in combination with decreased energy consumption or reduced consumption from conventional energy sources. Individuals and organizations that are direct consumers of energy choose to conserve energy to reduce energy costs and promote economic security. Industrial and commercial users can increase energy usage efficiency to maximize profit.

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Water pollution is a main global problem which requires ongoing evaluation and review of water resource policy at all levels. It has been recommended that it is the leading worldwide cause of deaths and diseases. An estimated 700 million Indians have no access to a proper toilet, and 1,000 Indian children die of diarrheal sickness every day. Some 90% of China’s cities suffer from some degree of water pollution and nearly 500 million people lack access to safe drinking water. In addition to the acute problems of water pollution in developing countries, developed countries continue to struggle with ollution problems as well. In the most recent national report on water quality in the United States, Environmental Issues 3. 45 percent of assessed stream miles, 47 percent of assessed lake acres, and 32 percent of assessed bays and estuarine square miles were classified as polluted. Water is typically referred to as polluted when it is impaired by anthropogenic contaminants and either does not support a human use, such as drinking water, and/or undergoes a marked shift in its ability to support its constituent biotic communities, such as fish.

Natural phenomena such as volcanoes, algae blooms, storms, and earthquakes also cause major changes in water quality and the ecological status of water. (United States Environmental Protection Agency, 2007) The environmental impact of meat production varies because of the wide variety of agricultural practices employed around the world. All agriculture practices have been found to have a variety of effects on the environment. Some of the environmental effects that have been associated with meat production are pollution, fossil fuels, and water and land consumption.

Livestock diseases compromise animal welfare, reduce productivity, and can infect humans. Animal diseases may be tolerated, reduced through animal husbandry, or reduced through antibiotics and vaccines. In developing countries, animal diseases are tolerated in animal husbandry, resulting in considerably reduced productivity, especially given the low health-status of many developing country herds. Disease management for gains in productivity is often the first step taken in implementing an agriculture policy. Disease management can be achieved through changes in animal husbandry.

These measures may aim to control spread using biosecurity measures, such as controlling animal mixing, controlling entry to farm lots and the use of protective clothing, and quarantining sick animals. Diseases also may be controlled by the use of vaccines and antibiotics. Antibiotics in sub-therapeutic doses may Environmental Issues 4. Also be used as a growth-promoter, increasing growth by 10-15% (Britannica online Encyclopedia, 2011). The issue of antibiotic resistance has limited the practices of preventative dosing such as antibiotic-laced feed.

Countries will often require the use of veterinary certificates before transporting, selling or showing animals. Disease-free areas often rigorously enforce rules for entry of potentially diseased animals, including quarantine. These issues need to be resolving in order to sustain the global population. The loss of species to extinction and the other environmental impacts that come from deforestation, sprawl, and urbanization are more than just unfortunate outcomes of our way of life.

They also represent an undermining of ecological systems that provide us with essential natural services, whether it is carbon cycling and oxygen production from forests or flood control and water purification from wetlands. The loss of these ecosystem services has direct health and economic consequences for humans, and it underlies the importance of finding ways to halt and reverse the process of land degradation and destruction (Turk, 2011). Environmental Issues 5.

Reference

United States Environmental Protection Agency (EPA). Washington, DC. “The National Water Quality Inventory: Report to Congress for the 2002 Reporting Cycle – A Profile. ” October 2007. Fact Sheet No. EPA 841-F-07-003. “Feed (agriculture): Antibiotics and other growth stimulants – Britannica Online Encyclopedia”. Britannica. com. Retrieved 2011-12-10. Turk, J. , & Bensel, T. (2011). Contemporary environmental issues. San Diego, CA: Bridgepoint Education, Inc.