STUDIES ON THE BACTERIA AND HEAVY METAL PROFILE OF RICE FIELD
CHAPTER ONE INTRODUCTION Background to the Study Heavy metals are generally referred to as those metals which possess a specific density of more than 5 g/cm3 and adversely affect the environment and living organisms (Järup, 2003). They, without doubt, are important constituents for plants and humans, when present only in small amount. Some micronutrient elements may also be toxic to both animals and plants at high concentrations. For instance, copper ...
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