Effect Of Crude Oil Pollution On Dissolved Oxygen And Ph In Aquatic Ecosystem

CHAPTER ONE  INTRODUCTION  1.1 BACKGROUND TO THE STUDY         Pollution is defined as the release of toxic or harmful substances into the environment (air, water and land) by their natural forces or man and other animals to an extent that cause biological damage to man and his resources. The harmful substances that cause pollution to the environment are called pollutants ( Eshagberi, 2014). There are six main types of pollution, these are; Air pollution, noise pollution, land pollution, water pollution, thermal pollution and nuclear pollution. AIR POLLUTION - This is defined as the presence i…