NEET BIOLOGY

Detailed explanation-1: -Acid rain is dangerous gases such as carbon dioxide, sulfur dioxide, and nitrogen oxide combined with water in clouds to create acid rain. When it comes to the problem of acid rain, Germany is its own worst enemy. The main sources of acid rain are smoke from factories and cars.

Detailed explanation-2: -As early as the 1960s, scientists observed evidence of tree damage from acid rain and other environmental pollutants in the Black Forest of Germany. First termed Waldsterben, or tree death, this phenomenon caused damage to nearly half of all trees in the Black Forest by 1990.

Detailed explanation-3: -In 1972, West Germany amended its constitution to address the sulfur dioxide and nitrogen oxide pollution that caused acid rain, which was, in turn, causing widespread damage to German forests. Soon, that amendment worked its way into a federal statute named Bundes-Immissionsschutzgesetz.

Detailed explanation-4: -Acid rain can be extremely harmful to forests. Acid rain that seeps into the ground can dissolve nutrients, such as magnesium and calcium, that trees need to be healthy. Acid rain also causes aluminum to be released into the soil, which makes it difficult for trees to take up water.

Detailed explanation-5: -The chief cause of the damage, according to most German scientists and forest administrators who have studied the problem, is air pollution and acid rain generated by industry and automobiles.