Question

(1) What are Harmfull effect water pollution in aquatic eco - system?

(2) Explain carbon cycle ?

Answer 1

1) The effect of water pollution is more on aquatic life, because their existence depends on water and when there is any disturbance in their ecosystem, the impact is maximum on them. In polluted water, due to abundant growth of algae, the oxygen content becomes lesser, causing the death of fishes and other organisms
2)The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth. Carbon is the main component of biological compounds as well as a major component of many minerals such as limestone. 

Answer 2

1)Dissolved oxygen is necessary to many forms of life including fish, invertebrates, bacteria and plants. These organisms use oxygen in respiration, similar to organisms on land. Fish and crustaceans obtain oxygen for respiration through their gills, while plant life and phytoplankton require dissolved oxygen for respiration when there is no light for photosynthesis so ultimately we can say that water pollution decrease the amount of oxygen due to which aquatic life ends time to time.

2) The cycle of carbon in living beings in which carbon dioxide is fixed by photosynthesis to form organic nutrients and is ultimately restored to the inorganic state by respiration and protoplasmic decay

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