Question

the effects of acid deposition usually appear over what time period? within seconds within minutes within hours very slowly over years

Explanation:

Acid deposition is a long - term environmental process. It involves the slow accumulation of acidic substances in the environment. These substances react with various elements in the ecosystem (such as soil, water, and plant tissues) over an extended period. For example, the leaching of nutrients from soil due to acid deposition occurs gradually. The corrosion of buildings and statues (made of materials like limestone) by acid rain also happens slowly as the chemical reactions (acid - base reactions) take time to cause visible and significant damage.

Answer:

very slowly over years