00:01
So here we have been told that coral reefs are involved in a complex symbiosis which is involving animals called polyps, algae, called zozantile and finally the microbial bacterial community.
00:20
It is also been told that the threat of ocean acidification to coral reefs is increasing day by day and in addition to this threat, corals are also threatened by the changes in the sea.
00:31
Ocean temperature which upsets the balance between symbiotic organisms which are related to these coral life.
00:41
Now from this passage we have been asked to find what are the changes in ph and temperature which lead to the problem or we can say the threat which has been occurred to to coral lives.
01:11
In continuation with that, we also have to tell that how these changes are affecting corals, some coral microorganisms and other oceanic marine organisms.
01:50
And then we also have to tell that what kind of evolutionary adaptation in organisms or any shift in marine species which could be seen in future due to these changes and whether the coral life would cease to exist or not.
02:24
So now coming to the effect or changes which are being seen, first we can say that increased greenhouse gases from human activities.
02:54
Have resulted in climate change and this climate change is resulted in ocean acidification.
03:22
Now the co2 carbon dioxide, the world's ocean is a massive sink for it because it absorbs, absorbs them although this has slowed global warming it is also changing the ocean chemistry and some changes which could be seen are the first one is warming of the ocean which results in thermal stress and the effect which is caused due to this is coral bleaching.
04:45
Now coming to the next option that is due to global warming sea level is rising resulting in sedimentation and the effect caused due to that is infectious diseases are spreading as well as smoothing of coral is also occurring.
05:29
Next we'll talk about the change in storm patterns...