Global warming is real and its major effects like climate change is widely accepted in two different ways one is an abnormal and manmade change, which is also known to us as greenhouse effect, another reason is called a natural phenomenon that, the earth is getting heated up naturally as it is aging and not the exhausting use earth natural resources.
The real reason is in front of us imagine a human body falling sick, it heats up to kill the germs and to get rid of unwanted bodies killing all the needed nourishment. The same is happening with the world human are using its all vital resources and in return leaving behind just dust, the earth is getting heated up to get rid of what is unwanted, all in all it is a natural process but the cause are us, Humans!
Recently the Ambazari lake became a grave yard for thousands of fishes. Heavy construction in the city is aimed as a reason behind this incident. But the event took place during summer and it is an obvious guess that the water heat is raised up.
There are in total three main phenomenon causing the happening: biotic stress, mechanical pressure and abiotic stress.  Biotic stress is the caused by other living beings such as bacterial damage and many more, on the other hand mechanical pressure occurs due to heavy manmade pollution. But all of these false when we talk about abiotic stress. This is an impact indirectly caused by humans and which is also the excess of every natural order, floods due to cutting down of mangroves and heat caused by over deforestation.
All the fishes washed up on the shores of Ambazari lake was a cause of heat which even noticed by the beings living on the ground.
The dissolved oxygen decreases due to heat in summers and sometimes even the metal deposits in the water starts dissolving due to overheating which ultimately poisons the lake and water bodies.
Calling all the options of biotic stress seems aside while the issues caused by heat is an actual fact.
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