Question

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

Explanation:

Acid deposition is a long - term environmental process. It involves the slow accumulation of acidic substances in the environment (such as soil, water bodies, and on plant surfaces). For example, acidic rain falling over years can gradually leach nutrients from the soil, harm aquatic life by changing water chemistry slowly, and damage forests by weakening trees over an extended period. These changes do not occur instantaneously (not within seconds, minutes, or hours) but rather develop gradually over years.

Answer:

very slowly over years