A biofertilizer is a substance which contains living microorganisms which, when applied, colonize the rhizosphere or the interior of the plant and promotes growth by increasing the supply or availability of primary nutrients to the host plant.
There are five biofertilizers viz. Rhizobium, Azotobacter, Azospirillum, Phosphate Solubilizing Bacteria and mycorrhiza, which have been incorporated in India’s Fertilizer Control Order (FCO), 1985. Rhizobium, Azotobacter, Azospirillum and blue green algae (BGA) have been traditionally used as Biofertilizers. Blue green algae such as Nostoc, Anabaena, Tolypothrix and Aulosira fix atmospheric nitrogen.

1, 2 and 4 are correct.
Volcanic eruptions emit water vapour and toxic gases into the atmosphere such as carbon dioxide, sulphur dioxide, hydrogen sulphide, hydrochloric acid and carbon monoxide Breathing (or respiration, or ventilation) is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly by bringing in oxygen and flushing out carbon dioxide.
Photosynthesis takes in the carbon dioxide produced by all breathing organisms and reintroduces oxygen into the atmosphere. Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms’ activities.
Decay of organic matter or putrefaction, process whereby heterotrophic organisms, including some bacteria, fungi, saprophytic plants, and lower animals, utilize the remains of once-living tissue as a source of nutrition. In the decomposition process, different products are released: carbon dioxide (CO2), energy, water, plant nutrients and re-synthesized organic carbon compounds.

Both the statements are correct.
The National Tiger Conservation Authority is a statutory body under the Ministry of Environment, Forests and Climate Change constituted under enabling provisions of the Wildlife (Protection) Act, 1972, as amended in 2006, for strengthening tiger conservation, as per powers and functions assigned to it under the said Act.
The National Tiger Conservation Authority has been fulfilling its mandate within the ambit of the Wildlife (Protection) Act, 1972 for strengthening tiger conservation in the country by retaining an oversight through advisories/normative guidelines, based on appraisal of tiger status, ongoing conservation initiatives and recommendations of specially constituted Committees.
Objective of the NTCA
• Providing statutory authority to Project Tiger so that compliance of its directives become legal.
• Fostering accountability of Center-State in management of Tiger Reserves, by providing a basis for MoU with States within our federal structure.
• Providing for an oversight by Parliament.
• Addressing livelihood interests of local people in areas surrounding Tiger Reserves.

The Royal Commission on Labour or the Whitley Commission on Labour was set up in 1929 to inquire into the existing conditions of labour in industrial undertakings and plantations in India.

Corruption Perception Index (CPI) is released by the Transparency International.