Реферат

Реферат на тему Effects Of Acid Rain On Water Essay

Работа добавлена на сайт bukvasha.net: 2015-06-18

Поможем написать учебную работу

Если у вас возникли сложности с курсовой, контрольной, дипломной, рефератом, отчетом по практике, научно-исследовательской и любой другой работой - мы готовы помочь.

Предоплата всего

от 25%

Подписываем

договор

Выберите тип работы:

Скидка 25% при заказе до 11.11.2024


Effects Of Acid Rain On Water Essay, Research Paper

Effects of Acid Rain on Water

The effects of acid rain are most clearly seen in the aquatic, or water, environments, such as streams, lakes, and marshes. Acid rain flows to streams, lakes, and marshes after falling on forests, fields, buildings, and roads. Acid rain also falls directly on aquatic habitats.

Most lakes and streams have a pH between 6 and 8. However, some lakes are naturally acidic even without the effects of acid rain. Lakes and streams become acidic (pH value goes down) when the water itself and its surrounding soil cannot buffer the acid rain enough to neutralize it. In areas like the Northeastern United States where soil buffering is poor, some lakes now have a pH value of less than 5. One of the most acidic lakes reported is Little Echo Pond in Franklin, New York. Little Echo Pond has a pH of 4.2. Lakes and streams in the western United States are usually not acidic. Because of differences in emissions and wind patterns, levels of acid deposition are generally lower in the western United States than in the eastern United States.

This chart shows that not all fish, shellfish, or their food insects can tolerate the same amount of acid:

Generally, the young of most species are more sensitive than adults. Frogs may tolerate relatively high levels of acidity, but if they eat insects like the mayfly, they may be affected because part of their food supply may disappear. As lakes and streams become more acidic, the numbers and types of fish and other aquatic plants and animals that live in these waters decrease. Some types of plants and animals are able to tolerate acidic waters. Others, however, are acid-sensitive and will be lost as the pH declines. Some acid lakes have no fish. At pH 5, most fish eggs cannot hatch. At lower pH levels, some adult fish die. Toxic substances like aluminum that wash into the water from the soil may also kill fish.

Together, biological organisms and the environment in which they live are called an ecosystem. The plants and animals living within an ecosystem are highly interdependent. For example, fish eat other fish and also other plants and animals that live in the lake or stream. If acid rain causes the loss of acid-sensitive plants and animals, then fish that rely on these organisms for food may also be affected.


1. Контрольная работа Примеры решения задач по математической статистике и теории вероятности
2. Реферат на тему Teen Social Problems Essay Research Paper Teen
3. Реферат на тему Floods Essay Research Paper Thousands of years
4. Реферат на тему Аппендицит Этиология Классификация Клиника
5. Реферат на тему Capitalism The Cause Of Slavery In The
6. Реферат Селим III
7. Реферат Структура, основні поняття і закони екології
8. Реферат на тему Dewey Hunter Theories Essay Research Paper John
9. Реферат на тему The Hobbit Essay Research Paper The HobbitTitle
10. Реферат Завадовский, Пётр Васильевич