Acid deposition causes

the greenhouse effect to lessen
lakes and forests to die
acid indigestion in humans
all the above are correct

The correct answer is: D. all of the above are correct.

Acid deposition is a major environmental problem that can have a significant impact on human health, ecosystems, and infrastructure. It occurs when air pollutants, such as sulfur dioxide and nitrogen oxides, are released into the atmosphere and react with water vapor to form acids. These acids can then fall back to Earth as rain, snow, or fog, or they can be deposited directly onto surfaces.

Acid deposition can cause a number of problems, including:

  • Destruction of forests and lakes. Acidic rain can kill trees and other plants, and it can also make lakes too acidic for fish and other aquatic life.
  • Damage to buildings and infrastructure. Acidic rain can corrode metals, damage concrete, and erode stone.
  • Health problems in humans. Acidic rain can irritate the skin, eyes, and respiratory system, and it can also increase the risk of respiratory infections.

Acid deposition is a serious problem that requires international cooperation to address. There are a number of things that can be done to reduce acid deposition, including:

  • Reducing emissions of sulfur dioxide and nitrogen oxides. This can be done by using cleaner fuels, such as natural gas, and by installing pollution control technologies on power plants and other sources of emissions.
  • Protecting forests and lakes. This can be done by planting trees that are resistant to acid rain, and by restoring damaged forests and lakes.
  • Educating the public about acid deposition. This can help people understand the problem and take steps to reduce their impact on it.

Acid deposition is a complex problem with no easy solutions. However, by working together, we can reduce the impacts of acid deposition and protect our environment.