Low dose exposure in the environment is an important area of research nowadays.This book is based on our investigation on assessment of alpha-activity for fishes and vegetables along with annual dose committed using samples from 4 important sites in this regard. A comprehensive background for this work is presented before the data. The book is organized as follow: Chapter 1 presents a brief introduction about ionizing radiation as pollutants .objectives of our work related with fish and vegetables are described in Chapter 2. In Chapter 3 discussion has been taken up on radioactive particles....