(b) A is incorrect R is correct.

(c) R explains A.

Any system having the capacity to accumulate more atmospheric carbon during a given time interval than releasing CO₂, Example: forest, soil, ocean are natural sinks. Landfills are artificial sinks.

In-situ conservation	Ex-situ conservation
Conservation of species In their natural habitat. E.g: Biosphere reserves	Conservation of species outside their natural habitat. E.g: Zoological parks

(i) Petunia species act as indicators for Nitrate pollution.
(ii) Gladiolus species acts as indicators for Fluoride pollution.

Paddy field, fossil fuel production, bacteria in water bodies, cattle rearing, non-wetland soils, and forest & wildfires.

CSS - Carbon Capture and Storage.

(a) Cloth / Jute bags
(b) Plantain leaves, palmyra plates as plates
(c) Metal cups
(d) Earthen pots or ceramic wares
(e) Paper made flags

Lakes as storage of rainwater provide drinking water, improves groundwater level and preserve the fresh water bio-diversity and habitat of the area wherein occurs.
In terms of services, lakes offer sustainable solutions to key issues of water management and climatic influences and benefits like nutrient retention, influencing local rainfall, removal of pollutants, phosphorous and nitrogen and carbon sequestration.

(i) Training on tree growing methods
(ii) Publicity and propaganda regarding tree growing
(iii) Formation of demonstration plots
(iv) Raising and supply of seedlings on subsidy
(v) Awareness creation among school children and youth about the importance of forests through training and camps.

(i) They help for detailed floristic and faunistic studies
(ii) These groves provide a number of ecosystem services to the neighborhood like protecting watershed, fodder, medicinal plants and microclimate control

Every human activity leaves a mark just like our footprint. This Carbon footprint is the total amount of greenhouse gases produced by human activities such as agriculture, industries, deforestation, waste disposal, burning fossil fuels directly or indirectly. It can be measured for an individual, family, organization like industries, state level or national level. It is usually estimated and expressed in equivalent tons of CO₂ per year. The burning of fossil fuels releases CO₂ and other greenhouse gases. In turn, these emissions trap solar energy and thus increase the global temperature resulting in ice melting, submerging of low lying areas and imbalance in nature Iike cyclones, tsunamis, and extreme weather conditions. To reduce the carbon footprint we can follow some practices like
(i) Eating indigenous fruits and products
(ii) Reduce use of your electronic devices
(iii) Reduce traveling
(iv) Do not buy fast and preserved, processed, packed foods.
(v) Plant a garden
(vi) Less consumption of meat and seafood. Poultry requires little space, nutrients and less pollution comparing cattle farming.
(vii) reduce the use of Laptops (when used for 8 hours, it releases nearly 2 kg. of CO₂ annually)
(viii) Line dry your clothes. (Example: If you buy imported fruit like kiwi, indirectly it increases CFP. How? The fruit has traveled a long distance in shipping or airliner thus emitting tons of CO₂)

Afforestation is planting of trees where there was no previous tree coverage and the conversion of non-forested lands into forests by planting suitable trees to retrieve the vegetation. Example: Slopes of dams afforested to reduce water run-off, erosion and siltation. It can also provide a range of environmental services including carbon sequestration, water retention.
The Man who Single handedly Created a Dense Forest
(i) Jadav "Molai" Payeng (born 1963) is an environmental activist has single-handedly planted a forest in the middle of a barren wasteland.
(ii) This Forest Man of India has transformed the world's largest river island, Majuli, located on one of India's major rivers, the Brahmaputra, into a dense forest, home to rhinos, deers, elephants, tigers, and birds.
(iii) And today his forest is larger than CentraI Park.