Describe the successful biomanipultaion of finland's lake vesijarvi.

In Lake Vesijarvi, there is large amounts of cyanobacterial blooms which have accumulated over several years back in 1980s. It was caused by an excessive amount of an  inner nutrient which was caused from the growing amount of cyprinid fish. The displacement of these fishes in order to decrease impurities i.e. known as biomanipulation which had taken place each summer for a continuous 5 years totally . After the occurence of second biomanipulation process, scientists have discovered about the disappearance of noxious blooms, there was decrease in cyanobacteria by 33% from the initial quantity. During the period of 5 years of testing, the overall transparency of the water increased by 1.5m and it was also proved that the deed of biomanipulation to disinfect the toxic body of water.

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.