Environment & Biodiversity MCQs

Notes:
Some of the greenhouse gases occur naturally in the atmosphere, while others result from human activities. Carbon dioxide contributes around 60%, Methane – 20%, CFC’s – 14% and N2O – 6%.

Notes:
The correct sequence of the events related to the sea-level rise will be:
1) Combustion of Fossil Fuels
2) Increase in Greenhouse Gasses
3) Global Warming
4) Melting of Glaciers
5) Sea level rise

Notes:
It is little expensive to design and construct a green building. The cost of operating a Green Building is less and has tremendous environmental benefits. Green Buildings use minimum energy to power itself.

Notes:
The concept of sustainable development was described by the Bruntland Commission Report of 1987. It described sustainable development as “development that meets the needs of the present without compromising the ability of future generations to meet their own needs.”

Notes:
Namami Gange mission is run by the Central
Government in five states namely
Uttarakhand, Uttar Pradesh, Jharkhand,
Bihar and West Bengal. It is managed by West Bengal Forest Department for
sustaining the biodiversity of the Ganga river ecosystem along with its
purification.

Notes:
Use of chemical fertilisers and excessive use of chemical pesticides are primarily responsible for pollution of our water and land resources. Manure and pesticides contains nutrients, such as phosphorus and nitrogen, and pathogens, including bacteria, viruses and parasites. These pollutants contaminate water resources and reduce recreational potential of lakes and rivers, destroy wildlife habitat, and eliminate drinking water supplies for people and livestock.

Notes:
Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water. It can remove many types of dissolved and suspended species from water, including bacteria, and is used in both industrial processes and the production of potable water (Desalination of marine water). It is most commonly known for its use in drinking water purification plants particularly in countries of middle east.

Notes:
The dodo (Raphus cucullatus) is an extinct flightless bird that was endemic to the island of Mauritius, east of Madagascar in the Indian Ocean. Subfossil remains show the dodo was about 1 metre (3ft 3 inches) tall and may have weighed 10.6–17.5 kg (23– 39 lb) in the wild. The closest living relative of the dodo is the Nicobar pigeon.

Notes:
Green undecomposed material used as manure is called green manure. It is obtained in two ways: (a) growing green manure crops usually belonging to leguminous family and incorporating into the soil after sufficient growth or (b) by collecting green leaf from plants grown in wastelands, field bunds and forest. The most important green manure crops are sunnhemp, dhaincha, etc.

Notes:
The Pantanal Conservation Area, recognized as a UNESCO World Heritage Site, accounts for 1.3% of the vast Pantanal wetland in Brazil and spans across 187,818 hectares. It provides shelter for more than 650 bird species, 325 fish species, and 80 mammal species, including giant armadillo and jaguar. The area’s unique ecosystem extends from floodplains to the Amolar Mountains, supporting diverse habitats and maintaining regional fish stocks. Moreover, it is an all-important breeding ground for wetland birds and refuge for globally threatened species like the hyacinth macaw. Additionally, it is a Ramsar Wetland and a UNESCO Man & Biosphere Reserve.