Harmful Effects of Different Classes of Heavy Metals in Our Beautiful Environment

Today we all take care very much about environment because it degrades day by day for several reasons; one of them is the accumulation of heavy metals which are one of the intrinsic components of this environment. The excessive accumulation of heavy metals affects all sides’ viz. air, soil, water of our beautiful environment through their adverse impacts. There are too many sources open till now for helping them to enter into the environment. This paper shows how they enter together and affects food chain, plant growth, seed germination, photosynthesis and so many. Excess accumulation of both types of heavy metals viz. essential (Zn, Cu, Fe etc) and non-essential (Pb, Hg, As etc) are responsible for disturbance of both aquatic as well as non-aquatic environment parallelly. Human beings also face slow but steady affect either direct or indirect way. So, we try to reflect how toxic level of heavy metals contamination poses a serious threat to our living environment.